<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.4 20241031//EN"
        "https://jats.nlm.nih.gov/publishing/1.4/JATS-journalpublishing1-4.dtd">
<article  article-type="other"        dtd-version="1.4">
            <front>

                <journal-meta>
                                                                <journal-id>tr-ent</journal-id>
            <journal-title-group>
                                                                                    <journal-title>The Turkish Journal of Ear Nose and Throat</journal-title>
            </journal-title-group>
                                        <issn pub-type="epub">2602-4837</issn>
                                                                                            <publisher>
                    <publisher-name>Istanbul University</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id/>
                                                                <article-categories>
                                            <subj-group  xml:lang="en">
                                                            <subject>Otorhinolaryngology</subject>
                                                    </subj-group>
                                            <subj-group  xml:lang="tr">
                                                            <subject>Kulak Burun Boğaz</subject>
                                                    </subj-group>
                                    </article-categories>
                                                                                                                                                        <title-group>
                                                                                                                                                            <article-title>Tracheotomy During Pandemic COVID-19 Outbreak. Experience At University Clinical Center Tuzla</article-title>
                                                                                                    </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                <name>
                                    <surname>Umihanic</surname>
                                    <given-names>Sekib</given-names>
                                </name>
                                                                    <aff>ENT Clinic, UCC Tuzla</aff>
                                                            </contrib>
                                                    <contrib contrib-type="author">
                                                                <name>
                                    <surname>Umihanić</surname>
                                    <given-names>Sefika</given-names>
                                </name>
                                                                    <aff>Clinic for lungh disease, UCC Tuzla</aff>
                                                            </contrib>
                                                    <contrib contrib-type="author">
                                                                <name>
                                    <surname>Pištoljević</surname>
                                    <given-names>Damir</given-names>
                                </name>
                                                                    <aff>Clinic for Anaesthesiology and Resuscitation, UCC Tuzla</aff>
                                                            </contrib>
                                                    <contrib contrib-type="author">
                                                                <name>
                                    <surname>Jahić</surname>
                                    <given-names>Rahima</given-names>
                                </name>
                                                                    <aff>Clinic for infective disease, UCC Tuzla</aff>
                                                            </contrib>
                                                    <contrib contrib-type="author">
                                                                <name>
                                    <surname>Dzananovic</surname>
                                    <given-names>Dzevad</given-names>
                                </name>
                                                                    <aff>Medical Faculty, University of Tuzla</aff>
                                                            </contrib>
                                                    <contrib contrib-type="author">
                                                                <name>
                                    <surname>Kamenjakovic</surname>
                                    <given-names>Samir</given-names>
                                </name>
                                                                    <aff>Medical Faculty, University of Tuzla</aff>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20220928">
                    <day>09</day>
                    <month>28</month>
                    <year>2022</year>
                </pub-date>
                                        <volume>32</volume>
                                        <issue>3</issue>
                                        <fpage>51</fpage>
                                        <lpage>57</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20220616">
                        <day>06</day>
                        <month>16</month>
                        <year>2022</year>
                    </date>
                                                    <date date-type="accepted" iso-8601-date="20220720">
                        <day>07</day>
                        <month>20</month>
                        <year>2022</year>
                    </date>
                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 1990, The Turkish Journal of Ear Nose and Throat</copyright-statement>
                    <copyright-year>1990</copyright-year>
                    <copyright-holder>The Turkish Journal of Ear Nose and Throat</copyright-holder>
                </permissions>
            
                                                                                                                        <abstract><p>Objective:  The  aim  of  the  study  was  to  present  experience  of  performed  tracheotomies  during  the  Covid19  pandemic  and  to  outline  the  adjustments made to the procedure for security reasons.Materials and Methods: In the retrospective study for the period March 2020 to April 2022 we analyzed the disease history data and surgical findings from all patients in UCC Tuzla who underwent surgical tracheotomy during the COVID-19 pandemic.Results: 52 patients who underwent open surgical tracheotomy after an invasive mechanical ventilation were analyzed in our study. Group A were 32 COVID-19 consecutive patients (22 male, mean age±13.54 years, range 23-76). The tracheotomy was performed approximately on day 12.4 of the intubation (range 4-28). Group B consisted of 22 patients who had not suffered from COVID-19, and their PCR test was negative for SARS-Cov-2 (12 male, mean age 59.4±20.40 years, range 19-87). The tracheotomy was performed approximately on day 10.1 of the intubation (range 2-20). There was a statistically significant difference in mortalities when both groups were compared. The most common complication was diffuse bleeding from soft tissue of the neck in the early post tracheotomy period and local infection in the later period. The most common comorbidities were arterial hypertension and diabetes mellitus.Conclusion:  According  to  our  study  results,  COVID-19  elderly  patients  who  are  on  Invasive  Mechanical  Ventilation  (IMV)  have  an  uncertain  prognosis. Correct timing of the tracheotomy is necessary so as not to further traumatize the patients.</p></abstract>
                                                            
            
                                                                                        <kwd-group>
                                                    <kwd>Tracheotomy</kwd>
                                                    <kwd>  Covid19</kwd>
                                                    <kwd>  Comorbidity</kwd>
                                                    <kwd>  Complications</kwd>
                                            </kwd-group>
                            
                                                                                                                                                    </article-meta>
    </front>
    <back>
                            <ref-list>
                                    <ref id="ref1">
                        <label>1</label>
                        <mixed-citation publication-type="journal">1. Esteban A, Anzueto A, Alia I. How is mechanical ventilation employed in the intensive care unit: an international utilization review. Am J Respir Crit Care Med 2000;161(5):1450-8. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref2">
                        <label>2</label>
                        <mixed-citation publication-type="journal">2. He F, Deng Y, Li W. Coronavirus disease 2019 (COVID-19): what we know? J Med Virol 2020; 92(7):719-25. doi: 10.1002/jmv.25766. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref3">
                        <label>3</label>
                        <mixed-citation publication-type="journal">3. Mo P, Xing Y, Xiao Y, et al. Clinical characteristics of refractory COVID-19 pneumonia in Wuhan, China. Clin Infect Dis 2020;73(11):e4208-e4213. doi: 10.1093/cid/ ciaa270. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref4">
                        <label>4</label>
                        <mixed-citation publication-type="journal">4. Guan WJ, Ni ZY, Hu Y, et al. Clinical characteristics of coronavirus disease 2019 in China. N Engl J Med 2020;382(18):1708-20.doi: 10.1056/NEJMoa2002032. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref5">
                        <label>5</label>
                        <mixed-citation publication-type="journal">5. Huang C, Wang Y, Li X, Ren L, Zhao J, Hu Y, et al. Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China. Lancet 2020;395(10223):497-506. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref6">
                        <label>6</label>
                        <mixed-citation publication-type="journal">6. Wang D, Hu B, Hu C, Zhu F, Liu X, Zhang J, et al. Clinical characteristics of 138 hospitalized patients with 2019 novel coronavirus-infected pneumonia in Wuhan, China. JAMA 2020;323(11):1061-9. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref7">
                        <label>7</label>
                        <mixed-citation publication-type="journal">7. Smith D, Montagne J, Raices M, Dietrich A, Carboni Bisso I, Heras ML, et al. Tracheostomy in the intensive care unit: Guidelines during COVID-19 worldwide pandemic. Am J Otolaryngol 2020;41(5):102578. doi: 10.1016/j.amjoto.2020.102578 google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref8">
                        <label>8</label>
                        <mixed-citation publication-type="journal">8. Meng L, Qiu H, Wan L, Ai Y, Xue Z, Guo Q, et al. Intubation and ventilation amid the COVID-19 outbreak: Wuhan’s experience. Anesthesiology 2020;132(6):1317-32. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref9">
                        <label>9</label>
                        <mixed-citation publication-type="journal">9. Burn E, Sena AG, Prats-Uribe A, Spotnitz M, DuVall M, Lynch KE, et al. Use of dialysis, tracheostomy, and extracorporeal membrane oxygenation among 842,928 patients hospitalized with COVID-19 in the United States. medRxiv 2021:2020.11.25.20229088. doi: 10.1101/2020.11.25.20229088. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref10">
                        <label>10</label>
                        <mixed-citation publication-type="journal">10. Frauenfelder C, Butler C, Hartley B, Cochrane L, Jephson RN, Nash R. et al. Practical insights for paediatric otolaryngology surgical cases and performing microlaryngobronchoscopy during the COVID-19 pandemic. Int J Pediatr Otorhinolaryngol March 2020;134:110030. doi: 10.1016/j.ijporl.2020.110030. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref11">
                        <label>11</label>
                        <mixed-citation publication-type="journal">11. Tay JK, Khoo ML, Loh WS. Surgical considerations for tracheostomy during the COVID-19 pandemic: lessons learned from the severe acute respiratory syndrome outbreak. JAMA Otolaryngol Head Neck Surg 2020;146(6):517-8. doi.org/ 10.1001/jamaoto.2020.0764. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref12">
                        <label>12</label>
                        <mixed-citation publication-type="journal">12. Francom CR, Javia L, Wolter NE, Soo Lee G, Wine T, Morrissey T, et al. Pediatric laryngoscopy and bronchoscopy during the COVID-19 pandemic: a four-center collaborative protocol to improve safety with perioperative management strategies and creation of a surgical tent with disposable drapes. Int J PediatrOtorhinolaryngol 2020;134:110059. doi: 10.1016/j.ijporl.2020.110059. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref13">
                        <label>13</label>
                        <mixed-citation publication-type="journal">13. Staibano P, Levin M, McHugh T, Gupta M, Sommer DD. Association of Tracheostomy with Outcomes in patients with COVID-19 and SARS-CoV-2 transmission among health care professionals: a systematic review and meta-analysis. JAMA Otolaryngol Head Neck Surg 2021;147(7):646-55. Doi: 10.1001/jamaoto.2021.0930. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref14">
                        <label>14</label>
                        <mixed-citation publication-type="journal">14. Sowerby LJ, Stephenson K, Dickie A, Lella FAD, Jefferson N, North H, et al. International registry of otolaryngologist-head and neck surgeons with COVID-19. Int Forum Allergy Rhinol 2020;10(11):1201-8. doi: 10.1 002/alr.22677. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref15">
                        <label>15</label>
                        <mixed-citation publication-type="journal">15. Benito DA, Bestourous DE, Tong JY, Pasick LJ, Sataloff RT. Tracheotomy in COVID-19 patients: a systematic review and meta-analysis of weaning, Decannulation, and survival. Otolaryngol Head Neck Surg 2021:165(3):398-405. doi: 10.1177/0194599820984780. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref16">
                        <label>16</label>
                        <mixed-citation publication-type="journal">16. Bjork V. Partial resection of the only remaining lung with the aid of respirator treatment. J Thorac Cardiovasc Surg 1960;39:179-88. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref17">
                        <label>17</label>
                        <mixed-citation publication-type="journal">17. Sifrer R, Benedik J, Anicin A. Elective open “Shield Tracheostomy” in patients with COVID-19. Eur Arch Otorhinolaryngol 2022;279(2):891-7. Doi: 10.1007/s00405-021-06820-7. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref18">
                        <label>18</label>
                        <mixed-citation publication-type="journal">18. McGrath B, Brenner MJ, Warrillow SJ, Pandian V, Arora A, Cameron TS, et al. Tracheostomy in the COVID-19 era: global and multidisciplinary guidance. Lancet Respir Med 2020;8(7):717-25. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref19">
                        <label>19</label>
                        <mixed-citation publication-type="journal">19. Wood MH, Hailwood M, Koutelos K. Reducing the risk of oxygen-related fires and explosions in hospitals treating Covid-19 patients. Process Saf Environ Prot 2021;153:278-88. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref20">
                        <label>20</label>
                        <mixed-citation publication-type="journal">20. Liu CC, Livingstone D, Dixon E, Dort JC. Early versus late tracheostomy: a systematic review and meta-analysis. Otolaryngol Head Neck Surg 2015;152(2):219-27. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref21">
                        <label>21</label>
                        <mixed-citation publication-type="journal">21. Griffiths J, Barber VS, Morgan L, Young JD. Systematic review and meta-analysis of studies of the timing of tracheostomy in adult patients undergoing artificial ventilation. BMJ 2005;330 (7502):1243. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref22">
                        <label>22</label>
                        <mixed-citation publication-type="journal">22. Hosokawa K, Nishimura M, Egi M, Vincent JL. Timing of tracheotomy in ICU patients: a systematic review of randomized controlled trials. Crit Care 2015;19:424. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref23">
                        <label>23</label>
                        <mixed-citation publication-type="journal">23. Koshkareva Y, Gaughan JP, Soliman AM. Risk factors for adult laryngotracheal stenosis: a review of 74 cases. Ann Otol Rhinol Laryngol 2007;116(3):206-10. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref24">
                        <label>24</label>
                        <mixed-citation publication-type="journal">24. van Kampen JJ, van de Vijver DA, Fraaij PL, Haagmans BL, Lamers MM, Okba N, et al. Duration and key determinants of infectious virus shedding in hospitalized patients with coronavirus disease-2019 (COVID-19). Nat Commun 2021;12(1):267. https:// doi.org/10.1038/s41467-020-20568-4 google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref25">
                        <label>25</label>
                        <mixed-citation publication-type="journal">25. Chao TN, Braslow BM, Martin ND, Ara AC, Atkins J, Haas AR, et al. Tracheotomy in ventilated patients with COVID-19. Ann Surg 2020;272(1):e30-2. 10.1097/SLA.0000000000003956 google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref26">
                        <label>26</label>
                        <mixed-citation publication-type="journal">26. Staibano P, Levin M, McHugh T, Gupta M, Sommer DD. Association of Tracheostomy with Outcomes in patients with COVID-19 and SARS-CoV-2 transmission among health care professionals: a systematic review and meta-analysis. JAMA Otolaryngol Head Neck Surg 2021;147(7):646-55. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref27">
                        <label>27</label>
                        <mixed-citation publication-type="journal">27. Sowerby LJ, Stephenson K, Dickie A, Lella FAD, Jefferson N, North H, et al. International registry of otolaryngologist-head and neck surgeons with COVID-19. Int Forum Allergy Rhinol 2020;10(11):1201-8. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref28">
                        <label>28</label>
                        <mixed-citation publication-type="journal">28. Xu K, Zhang XH, Long XB, Lu X, Liu Z. An environmental study of tracheostomy on eight COVID-19 patients. J Otolaryngol Head Neck Surg 2021;50:3. doi: 10.1186/s40463-021-00494-1. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref29">
                        <label>29</label>
                        <mixed-citation publication-type="journal">29. Volo T, Stritoni P, Battel I, Zennaro B, Lazzari F, Bellin M, et al. Elective tracheostomy during COVID-19 outbreak: to whom, when, how? Early experience from Venice, Italy. Eur Arch Otorhnolaryngol 2021;278(3):781-9. doi: 10.1007/s00405-020-06190-6. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref30">
                        <label>30</label>
                        <mixed-citation publication-type="journal">30. Nam IC, Shin YS, Jeong WJ, Park MW, Park SY, Song CM, et al. Guidelines for Tracheostomy From the Korean Bronchoesophagological Society. Clin Exp Otorhinolaryngol 2020;13(4):361-75. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref31">
                        <label>31</label>
                        <mixed-citation publication-type="journal">31. Guan WJ, Liang WH, Zhao Y, Liang HR, Chen ZS, Li YM, et al. Comorbidity and its impact on 1590 patients with COVID-19 in China: a nationwide analysis. Eur Respir J 2020;55(5):2000547. doi: 10.1183/13993003.00547-2020. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref32">
                        <label>32</label>
                        <mixed-citation publication-type="journal">32. Wenham C, Smith J, Morgan R, Gender and COVID-19 Working Group. COVID-19: the gendered impacts of the outbreak. Lancet 2020;395(10227):846-8. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref33">
                        <label>33</label>
                        <mixed-citation publication-type="journal">33. Epidemiology Working Group for NCIP Epidemic Response, Chinese Center for Disease Control and Prevention. [The epidemiological characteristics of an outbreak of 2019 novel coronavirus diseases (COVID19) in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2020;41(2):145-51. doi: 10.3760/cma.j.is sn.0254-6450.2020.02.003. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref34">
                        <label>34</label>
                        <mixed-citation publication-type="journal">34. Grasselli G, Zangrillo A, Zanella A, Antonelli M, Cabrini L, Castelli A, et al. Baseline characteristics and outcomes of 1591 patients infected with SARS-CoV-2 admitted to ICUs of the lombardy region, Italy. JAMA 2020;323(16):1574-81. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref35">
                        <label>35</label>
                        <mixed-citation publication-type="journal">35. Johnson-Obaseki S, Veljkovic A, Javidnia H. Complication rates of open surgical versus percutaneous tracheostomy in critically ill patients. Laryngoscope 2016;126(11):2459-67. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref36">
                        <label>36</label>
                        <mixed-citation publication-type="journal">36. Oliver ER, Gist A, Gillespie MB. Percutaneous versus surgical tracheotomy: an updated meta-analysis. Laryngoscope 2007;117(9):1570-5. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref37">
                        <label>37</label>
                        <mixed-citation publication-type="journal">37. Simon M, Metschke M, Braune SA, Püschel K, Kluge S. Death after percutaneous dilatational tracheostomy: a systematic review and analysis of risk factors. Crit Care 2013;17(5):R258. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref38">
                        <label>38</label>
                        <mixed-citation publication-type="journal">38. Halum SL, Ting JY, Plowman EK, Belafsky PC, Harbarger CF, Postma GN, et al. A multi-institutional analysis of tracheotomy complications. Laryngoscope 2012;122(1):38-45. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref39">
                        <label>39</label>
                        <mixed-citation publication-type="journal">39. Ülkümen B, Eskiizmir G, Tok D, Çivi M, Çelik O. Our Experience with percutaneous and surgical tracheotomy in intubated critically ill patients. Turk Arch Otorhinolaryngol 2018;56:199-205. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref40">
                        <label>40</label>
                        <mixed-citation publication-type="journal">40. Jotic AD, Milovanovic JP, Trivic AS, Folic MM, Krejovic-Trivic SB, Radin ZZ, et al. Predictors of Complications Occurrence Associated With Emergency Surgical Tracheotomy. Otolaryngol Head Neck Surg 2021;164(2):346-52. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref41">
                        <label>41</label>
                        <mixed-citation publication-type="journal">41. Botti C, Lusetti F, Neri T, Peroni S. Castellucci A, Salsi P, et al. Comparison of percutaneous dilatational tracheotomy versus open surgical technique in severe COVID-19: Complication rates, relative risks and benefits Auris Nasus Larynx 2021;48(3):511-7. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref42">
                        <label>42</label>
                        <mixed-citation publication-type="journal">42. Anderson JD, Rabinovici R, Frankel HL. Percutaneous dilational tracheostomy vs open tracheostomy. Chest 2001;120(4):1423-4. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref43">
                        <label>43</label>
                        <mixed-citation publication-type="journal">43. Heffner JE. Percutaneous dilatational vs standard tracheotomy: a meta-analysis but not the final analysis. Chest 2000;118(5):1236-8. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref44">
                        <label>44</label>
                        <mixed-citation publication-type="journal">44. Susanto I. Comparing percutaneous tracheostomy with open surgical tracheostomy. BMJ 2002;324(7328):3-4. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref45">
                        <label>45</label>
                        <mixed-citation publication-type="journal">45. Philip A Weissbrod, Albert L Merati. Is percutaneous dilational tracheotomy equivalent to traditional open surgical tracheotomy with regard to perioperative and postoperative complications? Laryngoscope 2012;122(7):1423-4. doi: 10.1002/lary.23289. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref46">
                        <label>46</label>
                        <mixed-citation publication-type="journal">46. Fang X, Li S, Yu H, Wang P, Zhang Y, et al. Epidemiological, comorbidity factors with severity and prognosis of COVID-19: a systematic review and meta-analysis. Aging (Albany NY) 2020;12(13):12493-503. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref47">
                        <label>47</label>
                        <mixed-citation publication-type="journal">47. Perez FM, del Pino JL, Garcıa NJ, Ruiz EM, Mendez CA, Jimenez JMG, et al. Comorbidity and prognostic factors on admission in a COVID-19 cohort of a general hospital. Rev Clin Esp (Barc) 2021;221(9):529-35. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref48">
                        <label>48</label>
                        <mixed-citation publication-type="journal">48. Guo W, Li M, Dong Y, Zhou H, Zhang Z, Tian C, et al. Diabetes is a risk factor for the progression and prognosis of COVID-19. Diabetes Metab Res Rev 2020;36(7):e3319. doi: 10.1002/dmrr.3319. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref49">
                        <label>49</label>
                        <mixed-citation publication-type="journal">49. Ushigome E, Hamaguchi M, Sudo K, Kitagawa N, Kondo Y, Imai D, et al. Impact of untreated diabetes and COVID-19-related diabetes on severe COVID-19. Heliyon 2022;8(1):e08801. doi: 10.1016/j. heliyon.2022.e08801. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref50">
                        <label>50</label>
                        <mixed-citation publication-type="journal">50. Chowdhary A, Tarai B, Singh A, Sharma A. Multidrug-resistant Candida auris infections in critically ill coronavirus disease patients, India, AprilJuly 2020. Emerg Infect Dis 2020;26(11):2694-6. google scholar</mixed-citation>
                    </ref>
                                    <ref id="ref51">
                        <label>51</label>
                        <mixed-citation publication-type="journal">51. Patel D, Devulapally K, Islam S. Safety of percutaneous tracheostomy in patients with coagulopathy and high ventilatory demand. Chest 2009;136(4):50S. doi: 10.1016/S0012-3692(16)48047-5 google scholar</mixed-citation>
                    </ref>
                            </ref-list>
                    </back>
    </article>
