Cüneyt Tayman profile image
Cüneyt Tayman Assoc. Prof. Dr.
Publication 35 Review 16 CrossRef Cited 15
35 Publication
16 Review
15 CrossRef Cited

Research Fields

Health Sciences

Institution

Popular Publications

How Does Being Second Infant in Twins Affect Premature Morbidity and Mortality?
Authors: Duran Yıldız , Ufuk Çakır , Ali Ulaş Tuğcu , Cüneyt Tayman
Published: 2022 , The Journal of Kırıkkale University Faculty of Medicine
DOI: 10.24938/kutfd.1081780
CITED 1 FAVORITE 2 TOTAL DOWNLOAD COUNT 908

1

2

908

THE EFFECT OF BLOOD GROUPS ON BRONCHOPULMONARY DYSPLASIA IN PREMATURE
Authors: Duran Yıldız , Ufuk Çakır , Ali Ulaş Tuğcu , Cüneyt Tayman
Published: 2022 , Acta Medica Nicomedia
DOI: 10.53446/actamednicomedia.1145000
CITED 0 FAVORITE 2 TOTAL DOWNLOAD COUNT 584

0

2

584

Comparison of Early Language Skills of Premature and Full-term Infants
Authors: Ayşe Sanem Şahlı , Gençay Sungur , Cüneyt Tayman
Published: 2021 , Turkish Journal of Pediatric Disease
DOI: 10.12956/tchd.780093
CITED 0 FAVORITE 2 TOTAL DOWNLOAD COUNT 1463

0

2

1463

Hipotermi Tedavisi Sonrası Subkutan Yağ Dokusu Nekrozu Gözlenen Bir Yenidoğan Olgusu
Authors: Demet Çam , Handan Bezirganoğlu , Fatma Sarı , Evrim Alyamac Dizdar , Şerife Oğuz , Cüneyt Tayman
Published: 2020 , Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
DOI: -
CITED 0 FAVORITE 1 TOTAL DOWNLOAD COUNT 1353

0

1

1353

YENİDOĞAN YOĞUN BAKIM ÜNİTESİNDE İDRAR YOLU ENFEKSİYONU TANISI İLE İZLENEN PRETERM BEBEKLERİN RETROSPEKTİF DEĞERLENDİRİLMESİ
Authors: Esra Özmen, Burak Ceran , Fatma Sarı , Handan Bezirganoğlu , Evrim Alyamac Dizdar , Cüneyt Tayman , Şerife Oğuz
Published: 2020 , Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
DOI: 10.38136/jgon.677916
CITED 2 FAVORITE 1 TOTAL DOWNLOAD COUNT 885

2

1

885

Publications

How does being a twin premature infant affect systemic inflammatory indices?
Authors: Ufuk Çakır , Cüneyt Tayman
Published: 2024 , Cukurova Medical Journal
DOI: 10.17826/cumj.1460277
FAVORITE 0 TOTAL DOWNLOAD COUNT 134

0

134

Evaluation of morbidity and mortality in preterm newborns with anemia
Authors: Ufuk Çakır , Cüneyt Tayman
Published: 2024 , Medical Journal of Ankara Training and Research Hospital
DOI: 10.20492/aeahtd.1366267
FAVORITE 1 TOTAL DOWNLOAD COUNT 257

1

257

Neonatal antibodies are detected in cord blood after vaccination of pregnant woman with the inactivated SARS-CoV-2 vaccine: A case report
Authors: Zeynep Asli Oskovi Kaplan , A. Seval Özgü-erdinç , Gul Nihal Buyuk , Eda Üreyen Özdemir , Cüneyt Tayman , Bedia Dinç , Özlem Moraloğlu Tekin
Published: 2023 , Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
DOI: 10.38136/jgon.1083930
FAVORITE 0 TOTAL DOWNLOAD COUNT 177

0

177

Effect of sex and mode of delivery on systemic inflammatory indices in preterm infants
Authors: Ufuk Çakır , Cüneyt Tayman
Published: 2023 , Cukurova Medical Journal
DOI: 10.17826/cumj.1366249
FAVORITE 0 TOTAL DOWNLOAD COUNT 276

0

276

The effect of assisted reproductive technology on morbidity and mortality of twin premature
Authors: Burak Ceran , Ufuk Çakır , Ali Ulaş Tuğcu , Cüneyt Tayman
Published: 2022 , Mersin Üniversitesi Sağlık Bilimleri Dergisi
DOI: 10.26559/mersinsbd.1092509
FAVORITE 0 TOTAL DOWNLOAD COUNT 348

0

348

Relationship between thyroid function tests and small for gestational age in preterm newborns
Authors: Duran Yıldız , Ufuk Çakır , Ali Ulaş Tuğcu , Cüneyt Tayman
Published: 2022 , Cukurova Medical Journal
DOI: 10.17826/cumj.1171931
FAVORITE 0 TOTAL DOWNLOAD COUNT 481

0

481

THE EFFECT OF BLOOD GROUPS ON BRONCHOPULMONARY DYSPLASIA IN PREMATURE
Authors: Duran Yıldız , Ufuk Çakır , Ali Ulaş Tuğcu , Cüneyt Tayman
Published: 2022 , Acta Medica Nicomedia
DOI: 10.53446/actamednicomedia.1145000
FAVORITE 2 TOTAL DOWNLOAD COUNT 584

2

584

Risk of morbidity and mortality in preterm infants born to advanced maternal age pregnancies
Authors: Burak Ceran , Ufuk Çakır , Duran Yıldız , Ali Ulaş Tuğcu , Selcan Sınacı , Cüneyt Tayman
Published: 2022 , Archives of Current Medical Research
DOI: 10.47482/acmr.1134592
FAVORITE 0 TOTAL DOWNLOAD COUNT 358

0

358

Effects of being small for gestational age on morbidities of prematurity
Authors: Duran Yıldız , Burak Ceran , Ufuk Çakır , Ali Ulaş Tuğcu , Cüneyt Tayman
Published: 2022 , Anatolian Clinic the Journal of Medical Sciences
DOI: 10.21673/anadoluklin.1096789
FAVORITE 0 TOTAL DOWNLOAD COUNT 844

0

844

How Does Being Second Infant in Twins Affect Premature Morbidity and Mortality?
Authors: Duran Yıldız , Ufuk Çakır , Ali Ulaş Tuğcu , Cüneyt Tayman
Published: 2022 , The Journal of Kırıkkale University Faculty of Medicine
DOI: 10.24938/kutfd.1081780
FAVORITE 2 TOTAL DOWNLOAD COUNT 908

2

908

Antenatal and Postnatal Risk Factors for Bronchopulmonary dysplasia: Single-center Experience
Authors: Buse Ozer Bekmez , Mehmet Büyüktiryaki , Fatma Nur Sarı , Evrim Alyamac Dizdar , Cüneyt Tayman , Suna Oguz
Published: 2022 , Turkish Journal of Pediatric Disease
DOI: 10.12956/tchd.959157
FAVORITE 1 TOTAL DOWNLOAD COUNT 773

1

773

Comparison of Early Language Skills of Premature and Full-term Infants
Authors: Ayşe Sanem Şahlı , Gençay Sungur , Cüneyt Tayman
Published: 2021 , Turkish Journal of Pediatric Disease
DOI: 10.12956/tchd.780093
FAVORITE 2 TOTAL DOWNLOAD COUNT 1463

2

1463

The Effect of Sex Differences on Premature Morbidities and Mortality in Very Low Birth Weight Infants
Authors: Şehribanu Işık , Fatma Nur Sarı , Mehmet Büyüktiryaki , Ömer Ertekin , Evrim Alyamac Dizdar , Cüneyt Tayman
Published: 2021 , Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
DOI: 10.38136/jgon.762977
FAVORITE 0 TOTAL DOWNLOAD COUNT 424

0

424

Factors Affecting the Full Enteral Feeding in Very Low Birth Weight Preterm Infants
Authors: Merve Küçükoğlu Keser , Aslıhan Köse, Esin Okman , Esra Özmen, Fatma Sarı , Cüneyt Tayman , Evrim Alyamac Dizdar
Published: 2021 , Turkish Journal of Pediatric Disease
DOI: 10.12956/tchd.688924
FAVORITE 0 TOTAL DOWNLOAD COUNT 1049

0

1049

A National Survey and Assesment for Clinical Ultrasound Use of Neonatal Physicians in Turkey
Authors: Burak Ceran , Ufuk Çakır, Yavuzalp Solak , Cüneyt Tayman
Published: 2021 , Güncel Pediatri
DOI: -
FAVORITE 0 TOTAL DOWNLOAD COUNT 761

0

761

Feeding intolerance associates with late onset sepsis in very low birth weight infants
Authors: Aslıhan Köse Çetinkaya , Fatma Nur Sarı , Mehmet Büyüktiryaki , Evrim Alyamac Dizdar , Cüneyt Tayman , Şerife Oğuz
Published: 2021 , Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
DOI: 10.38136/jgon.730020
FAVORITE 1 TOTAL DOWNLOAD COUNT 407

1

407

‘OBSTETRIC MANAGEMENT IN COVID-19 PANDEMIC’
Authors: Hüseyin Levent Keskin , Şebnem Şen Özyer , Dilek Sahin , Serpil Ünlü, Namık Özcan , Cüneyt Tayman , Şule Özel , Özlem Moraloğlu Tekin
Published: 2020 , Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
DOI: 10.38136/jgon.726918
FAVORITE 1 TOTAL DOWNLOAD COUNT 2961

1

2961

YENİDOĞAN YOĞUN BAKIM ÜNİTESİNDE İDRAR YOLU ENFEKSİYONU TANISI İLE İZLENEN PRETERM BEBEKLERİN RETROSPEKTİF DEĞERLENDİRİLMESİ
Authors: Esra Özmen, Burak Ceran , Fatma Sarı , Handan Bezirganoğlu , Evrim Alyamac Dizdar , Cüneyt Tayman , Şerife Oğuz
Published: 2020 , Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
DOI: 10.38136/jgon.677916
FAVORITE 1 TOTAL DOWNLOAD COUNT 885

1

885

Konjenital toksoplazmosiz, nadir bir olgu sunumu
Authors: Mustafa Şenol Akın , Fatma Sarı , Evrim Alyamac Dizdar , Cüneyt Tayman , Şerife Oğuz
Published: 2020 , Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
DOI: 10.38136/jgon.665945
FAVORITE 1 TOTAL DOWNLOAD COUNT 898

1

898

SEFAL HEMATOM NEDENİYLE İZLENEN HASTALARIN RETROSPEKTİF DEĞERLENDİRİLMESİ
Authors: Esra Özmen, Burak Ceran , Ufuk Çakır , Cüneyt Tayman
Published: 2020 , Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
DOI: 10.38136/jgon.665816
FAVORITE 0 TOTAL DOWNLOAD COUNT 948

0

948

Hipotermi Tedavisi Sonrası Subkutan Yağ Dokusu Nekrozu Gözlenen Bir Yenidoğan Olgusu
Authors: Demet Çam , Handan Bezirganoğlu , Fatma Sarı , Evrim Alyamac Dizdar , Şerife Oğuz , Cüneyt Tayman
Published: 2020 , Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
DOI: -
FAVORITE 1 TOTAL DOWNLOAD COUNT 1353

1

1353

Relationship between osteopenia of prematurity and ABO blood groups
Authors: Ufuk Çakır , Cüneyt Tayman , Mehmet Büyüktiryaki
Published: 2019 , Cukurova Medical Journal
DOI: 10.17826/cumj.571122
FAVORITE 0 TOTAL DOWNLOAD COUNT 1118

0

1118

Farklı Kan Grupları Nekrotizan Enterokolit Gelişimini Etkiler Mi?
Authors: Cüneyt Tayman , Ufuk Çakır
Published: 2019 , Medical Journal of Süleyman Demirel University
DOI: 10.17343/sdutfd.477641
FAVORITE 0 TOTAL DOWNLOAD COUNT 1108

0

1108

Evaluation of simultaneous blood and cerebrospinal fluid culture findings in neonatal meningitis
Authors: Halit Halil , Şehribanu Özlüer Işık , Sibel Saygan, Şerife Suna Oğuz , Cüneyt Tayman
Published: 2019 , Cukurova Medical Journal
DOI: 10.17826/cumj.485624
FAVORITE 1 TOTAL DOWNLOAD COUNT 885

1

885

The value of VEGF and IGF-1 in the diagnosis retinopathy of prematurity and follow-up of response to laser therapy
Authors: Cüneyt Tayman , Ufuk Çakır , Özdemir Özdemir
Published: 2019 , Cukurova Medical Journal
DOI: 10.17826/cumj.472840
FAVORITE 0 TOTAL DOWNLOAD COUNT 763

0

763

The effect of antenatal magnesium sulphate administration on patent ductus arteriozus in very low birth weight preterms
Authors: Ufuk Çakır , Cüneyt Tayman
Published: 2019 , Journal of Harran University Medical Faculty
DOI: 10.35440/hutfd.471717
FAVORITE 0 TOTAL DOWNLOAD COUNT 1205

0

1205

Gebelik Yaşına Göre Normal ve Düşük Doğum Ağırlıklı Prematüre Bebeklerde Mortalite ve Morbiditelerin Karşılaştırılması
Authors: Gülsüm Kadıoğlu Şimşek , Mehmet Büyüktiryaki , Hayriye Gözde Kanmaz Kutman , Tuğba Alarcon Martinez, Şerife Suna Oğuz , Cüneyt Tayman , Fuat Emre Canpolat
Published: 2019 , Namık Kemal Tıp Dergisi
DOI: -
FAVORITE 1 TOTAL DOWNLOAD COUNT 8879

1

8879

Medikal Tedaviye Yanıtsız Duktus Arteriosuslu Preterm İnfantların Tedavisinde Güvenli Bir Yöntem: Yatakbaşı Cerrahi ligasyon
Authors: Davut Bozkaya , Atakan Atalay, Sabriye Korkut , Cüneyt Tayman , İrfan Taşoğlu
Published: 2019 , Journal of Contemporary Medicine
DOI: 10.16899/jcm.568276
FAVORITE 0 TOTAL DOWNLOAD COUNT 1490

0

1490

Evaluation of Neonatal Abstinence Syndrome (NAS) Frequency and Systemic Inflammatory Response in NAS
Authors: Cüneyt Tayman
Published: 2019 , Turkish Journal of Pediatric Disease
DOI: 10.12956/tjpd.2018.357
FAVORITE 0 TOTAL DOWNLOAD COUNT 4858

0

4858

PNEUMOTHORAX IN NEWBORN AND COMPARISON OF DEMOGRAPHIC AND CLINICAL FEATURES ACCORDING TO DRAINAGE TREATMENT REQUIREMENT WITH CHEST TUBE
Authors: Mehmet Büyüktiryaki , Evrim Alyamaç Dizdar , Nilüfer Okur , Buse Özer Bekmez, Cüneyt Tayman
Published: 2019 , Turkish Journal of Pediatric Disease
DOI: 10.12956/tchd.510587
FAVORITE 0 TOTAL DOWNLOAD COUNT 7092

0

7092

Evaluation of the Relationship Between Congenital Hypothyroidism and Retinopathy of Prematurity in Very Low Birth Weight Newborns
Authors: Ufuk Çakır , Cüneyt Tayman , Mehmet Büyüktiryaki
Published: 2018 , The Journal of Kırıkkale University Faculty of Medicine
DOI: 10.24938/kutfd.396667
FAVORITE 0 TOTAL DOWNLOAD COUNT 872

0

872

ANTENATAL MAGNEZYUM SÜLFAT UYGULANMASININ PREMATÜRE MORBİDİTELERİ VE MORTALİTESİ ÜZERİNE ETKİSİNİN DEĞERLENDİRİLMESİ
Authors: Ufuk Çakır , Cuneyt Tayman , Ümit Yasemin Sert
Published: 2018 , Medical Journal of Ankara Training and Research Hospital
DOI: -
FAVORITE 0 TOTAL DOWNLOAD COUNT 6304

0

6304

The incidence of patent ductus arteriosus (PDA) in very low birth weight infants and its impact on clinical outcomes: data from a third level center
Authors: Ufuk Çakır , Cüneyt Tayman , Buse Özer Bekmez, Mehmet Büyüktiryaki
Published: 2018 , Journal of Harran University Medical Faculty
DOI: -
FAVORITE 0 TOTAL DOWNLOAD COUNT 1916

0

1916

The Importance and Requirement of Palliative Care in Newborn Intensive Care Units
Authors: Şule Özel , Cüneyt Tayman , Sabriye Korkut , Esra Şükran Çakar, Yaprak Engin Üstün
Published: 2018 , Ahi Evran Medical Journal
DOI: -
FAVORITE 0 TOTAL DOWNLOAD COUNT 2813

0

2813

Evaluation of Risk Factors for Necrotizing Enterocolitis in Preterm Infants
Authors: Cüneyt Tayman , Alparslan Tonbul, Nurdan Uras, Hasan Kahveci, Burhan Köseoğlu, M. Mansur Tatlı
Published: 2011 , Güncel Pediatri
DOI: -
FAVORITE 0 TOTAL DOWNLOAD COUNT 676

0

676

Articles published in
Acta Medica Nicomedia
Acta Medica Nicomedia
Ahi Evran Medical Journal
Ahi Evran Medical Journal
Anatolian Clinic the Journal of Medical Sciences
Anatolian Clinic the Journal of Medical Sciences
Archives of Current Medical Research
Archives of Current Medical Research
Cukurova Medical Journal
Cukurova Medical Journal
Güncel Pediatri
Güncel Pediatri
Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
Journal of Contemporary Medicine
Journal of Contemporary Medicine
Journal of Harran University Medical Faculty
Journal of Harran University Medical Faculty
Medical Journal of Ankara Training and Research Hospital
Medical Journal of Ankara Training and Research Hospital
Medical Journal of Süleyman Demirel University
Medical Journal of Süleyman Demirel University
Mersin Üniversitesi Sağlık Bilimleri Dergisi
Mersin Üniversitesi Sağlık Bilimleri Dergisi
Namık Kemal Tıp Dergisi
Namık Kemal Tıp Dergisi
The Journal of Kırıkkale University Faculty of Medicine
The Journal of Kırıkkale University Faculty of Medicine
Turkish Journal of Pediatric Disease
Turkish Journal of Pediatric Disease
Editorship
Acta Medica Nicomedia
Acta Medica Nicomedia
Section Editor
Ortadoğu Tıp Dergisi
Ortadoğu Tıp Dergisi
Section Editor

Reviews

Cukurova Medical Journal
Cukurova Medical Journal
Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
Journal of Contemporary Medicine
Journal of Contemporary Medicine
Ortadoğu Tıp Dergisi
Ortadoğu Tıp Dergisi
Turkish Journal of Pediatric Disease
Turkish Journal of Pediatric Disease

Publications

Effects of being small for gestational age on morbidities of prematurity
Authors: Duran Yıldız , Burak Ceran , Ufuk Çakır , Ali Ulaş Tuğcu , Cüneyt Tayman
Published: 2022 , Anatolian Clinic the Journal of Medical Sciences
DOI: 10.21673/anadoluklin.1096789
CITED 1 FAVORITE 0 TOTAL DOWNLOAD COUNT 844

1

0

844

How Does Being Second Infant in Twins Affect Premature Morbidity and Mortality?
Authors: Duran Yıldız , Ufuk Çakır , Ali Ulaş Tuğcu , Cüneyt Tayman
Published: 2022 , The Journal of Kırıkkale University Faculty of Medicine
DOI: 10.24938/kutfd.1081780
CITED 1 FAVORITE 2 TOTAL DOWNLOAD COUNT 908

1

2

908

Feeding intolerance associates with late onset sepsis in very low birth weight infants
Authors: Aslıhan Köse Çetinkaya , Fatma Nur Sarı , Mehmet Büyüktiryaki , Evrim Alyamac Dizdar , Cüneyt Tayman , Şerife Oğuz
Published: 2021 , Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
DOI: 10.38136/jgon.730020
CITED 1 FAVORITE 1 TOTAL DOWNLOAD COUNT 407

1

1

407

‘OBSTETRIC MANAGEMENT IN COVID-19 PANDEMIC’
Authors: Hüseyin Levent Keskin , Şebnem Şen Özyer , Dilek Sahin , Serpil Ünlü, Namık Özcan , Cüneyt Tayman , Şule Özel , Özlem Moraloğlu Tekin
Published: 2020 , Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
DOI: 10.38136/jgon.726918
CITED 3 FAVORITE 1 TOTAL DOWNLOAD COUNT 2961

3

1

2961

YENİDOĞAN YOĞUN BAKIM ÜNİTESİNDE İDRAR YOLU ENFEKSİYONU TANISI İLE İZLENEN PRETERM BEBEKLERİN RETROSPEKTİF DEĞERLENDİRİLMESİ
Authors: Esra Özmen, Burak Ceran , Fatma Sarı , Handan Bezirganoğlu , Evrim Alyamac Dizdar , Cüneyt Tayman , Şerife Oğuz
Published: 2020 , Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi
DOI: 10.38136/jgon.677916
CITED 2 FAVORITE 1 TOTAL DOWNLOAD COUNT 885

2

1

885

Farklı Kan Grupları Nekrotizan Enterokolit Gelişimini Etkiler Mi?
Authors: Cüneyt Tayman , Ufuk Çakır
Published: 2019 , Medical Journal of Süleyman Demirel University
DOI: 10.17343/sdutfd.477641
CITED 1 FAVORITE 0 TOTAL DOWNLOAD COUNT 1108

1

0

1108

The effect of antenatal magnesium sulphate administration on patent ductus arteriozus in very low birth weight preterms
Authors: Ufuk Çakır , Cüneyt Tayman
Published: 2019 , Journal of Harran University Medical Faculty
DOI: 10.35440/hutfd.471717
CITED 1 FAVORITE 0 TOTAL DOWNLOAD COUNT 1205

1

0

1205

Evaluation of Neonatal Abstinence Syndrome (NAS) Frequency and Systemic Inflammatory Response in NAS
Authors: Cüneyt Tayman
Published: 2019 , Turkish Journal of Pediatric Disease
DOI: 10.12956/tjpd.2018.357
CITED 3 FAVORITE 0 TOTAL DOWNLOAD COUNT 4858

3

0

4858

PNEUMOTHORAX IN NEWBORN AND COMPARISON OF DEMOGRAPHIC AND CLINICAL FEATURES ACCORDING TO DRAINAGE TREATMENT REQUIREMENT WITH CHEST TUBE
Authors: Mehmet Büyüktiryaki , Evrim Alyamaç Dizdar , Nilüfer Okur , Buse Özer Bekmez, Cüneyt Tayman
Published: 2019 , Turkish Journal of Pediatric Disease
DOI: 10.12956/tchd.510587
CITED 1 FAVORITE 0 TOTAL DOWNLOAD COUNT 7092

1

0

7092

Evaluation of the Relationship Between Congenital Hypothyroidism and Retinopathy of Prematurity in Very Low Birth Weight Newborns
Authors: Ufuk Çakır , Cüneyt Tayman , Mehmet Büyüktiryaki
Published: 2018 , The Journal of Kırıkkale University Faculty of Medicine
DOI: 10.24938/kutfd.396667
CITED 1 FAVORITE 0 TOTAL DOWNLOAD COUNT 872

1

0

872

Popular Publications: It is determined automatically by the researchers doing research in DergiPark according to the statistics of being added to the favorites. CrossRef Cited: The citations shown in DergiPark are drawn from CrossRef. For this, the cited and cited articles must be registered in CrossRef (DOI number). ^: Citation numbers are reflected in the system by DergiPark at certain periods.
Interactive Guide Tool
If you want to see the panel introduction, you can click Start Tour.