Beste Gastrozele Gastroenterologen in Istanbul - TOP -21 Ärzte

Dr. Tarık Akar absolvierte im Jahr 2000 die Cerrahpaşa School of Medicine der Universität Istanbul und erhielt 2004 den Titel „Internist“. Er hat 19 internationale Artikel, 6 lokale Artikel und 25 lokale und internationale Kongresspräsentationen veröffentlicht. Zu seinen medizinischen Interessengebieten gehören Achalasie, ESD, ERCP, Zenker-Divertikel und Gastroparese.

Eğitim:

• Lisans Derecesi (MD): Tıp Fakültesi, Uludağ Üniversitesi, 1989

Uzmanlık Eğitimi ve Deneyim:

• Genel Cerrahi Uzmanlık Derecesi: Ankara Numune Eğitim ve Araştırma Hastanesi, 1997
• Yan Dal (Fellowship): Gastroenteroloji Cerrahisi, Türkiye Yüksek İhtisas Hastanesi, 2005

Akademik Kariyer:

• Doçentlik: Genel Cerrahi, İnönü Üniversitesi, 2011
• Profesörlük: Genel Cerrahi, İnönü Üniversitesi, 2017

Prof. Dr. Samet Yardımcı - Specialist in Gastroenterology and General Surgery

Education and Specialization:

• Medical Degree: Ankara University Faculty of Medicine (2003)
• Residency in General Surgery: Haydarpaşa Numune Training and Research Hospital (2003-2009)
• Fellowship in Gastroenterology Surgery: Türkiye Yüksek İhtisas Training and Research Hospital (2009-2012)

Professional Experience:

• 2003-2009: Assistant Doctor at Haydarpaşa Numune Training and Research Hospital
• 2009-2012: Specialist at Türkiye Yüksek İhtisas Training and Research Hospital
• 2012-2017: Specialist at Marmara University Pendik Training and Research Hospital
• 2017-2018: Associate Professor at Marmara University Pendik Training and Research Hospital
• 2018-Present: Professor at VM Medical Park Pendik Hospital

Areas of Expertise:

• Obesity Surgery
• Gastroenterology Surgery
• Reflux Surgery
• Stomach Surgery
• Laparoscopic Surgery
• Inflammatory Bowel Diseases
• Colorectal Surgery

Research and Publications: Prof. Dr. Yardımcı has numerous publications in international journals, focusing on topics such as liver regeneration, splenic hydatid cysts, and the surgical treatment of gastrointestinal diseases. His research includes innovative methods in bariatric surgery and the treatment of inflammatory bowel diseases.

Certifications and Awards:

• Turkish Surgery Competency Certificate
• International Observership Certificate from Memorial Hermann Hospital, Houston, Texas
• Best Young Researcher Award at the Congress of Transplantation (2011)
• Istanbul Provincial Health Directorate Patient Satisfaction Certificate

Professional Memberships:

• Turkish Surgery Association
• Turkish Hepato-Pancreato-Biliary Surgery Association
• Gastroenterology Surgery Association
• Turkish Obesity Surgery Association
• International Federation for the Surgery of Obesity and Metabolic Disorders

Experience:

2022 - 

Medipol Bahçelievler

2021 - 2022

MEDIPOL UNIVERSITY SEFAKÖY HOSPITAL

2018 - 2020

İSTİNYE UNIVERSITY FACULTY OF MEDICINE

2014 - 2020

TOKAT STATE HOSPITAL

2010 - 2010

BINGOL STATE HOSPITAL

Education:

2021

MEDIPOL UNIVERSITY, GASTROTEROLOGY

2018

İSTINYE UNIVERSITY, INTERNAL DISEASES USA

2014

ANKARA TRAINING AND RESEARCH HOSPITAL, GASTROENTEROLOGY

2010

FIRAT UNIVERSITY, FACULTY OF MEDICINE/INTERNAL MEDICAL SCIENCES DEPARTMENT/INTERNAL MEDICINE DEPARTMENT

2004

FIRAT UNIVERSITY, FACULTY OF MEDICINE

A. International Peer-Reviewed Journal Articles:

Title: Fatal fulminant hepatitis B after withdrawal of entecavir treatment in a patient with HBeAg seroconversion.

• Authors: Sarıkaya Murat, Koçak Erdem, Köklü Seyfettin, Babalı Ayşegül, Çakal Başak
• Journal: Acta Gastro-Enterologica Belgica
• Year: 2012
• Volume/Issue: (Kontrol No: 1206043)

Title: Acute gastric obstruction resulting from gallstone-induced bezoar.

• Authors: Sarıkaya Murat, Koçak Erdem, Köklü Seyfettin, Akbal Erdem
• Journal: The American Surgeon
• Year: 2012
• Volume/Issue: 78(12)
• Page: 529
• (Kontrol No: 1129707)

Title: Garlic-induced esophagitis.

• Authors: Doğan Zeynal, Sarıkaya Murat, Filik Levent, Ergül Bilal
• Journal: Acta Gastro-Enterologica Belgica
• Year: 2013
• Volume/Issue: 76(2)
• Page: 262
• (Kontrol No: 1131422)

Title: Association between Helicobacter pylori and liver-to-spleen ratio.

• Authors: Doğan Zeynal, Sarıkaya Murat, Filik Levent, Ergül Bilal
• Journal: European Journal of Gastroenterology & Hepatology
• Year: 2013
• Volume/Issue: 25(1)
• Pages: 107-110
• Citations: 7
• DOI: 10.1097/MEG.0b013e3283590c10
• (Kontrol No: 1131424)

Title: Crohn's disease masked by median arcuate ligament syndrome.

• Authors: Bıyıkoğlu İbrahim, Sarıkaya Murat, Uysal Ramadan Selma, Ergül Bilal, Doğan Zeynal
• Journal: Chinese Medical Journal
• Year: 2013
• Volume/Issue: 126 (14)
• Page: 2798
• Citations: 1
• (Kontrol No: 1131477)

Title: Telaprevir and anemia: What we learned from the first three patients.

• Authors: Sarıkaya Murat, Doğan Zeynal, Ergül Bilal, Filik Levent
• Journal: Scandinavian Journal of Infectious Diseases
• Year: 2013
• Volume/Issue: 45(7)
• Page: 575-575
• Citations: 2
• DOI: 10.3109/00365548.2012.759271
• (Kontrol No: 1129738)

Title: Magnesium and parathyroid hormone levels of patients using different proton pump inhibitors.

• Authors: Sarıkaya Murat, Filik Levent, Ergul Bilal, Doğan Zeynal
• Journal: Gastroenterology Nursing
• Year: 2013
• Volume/Issue: 36 (2)
• Pages: 145-148
• DOI: 10.1097/SGA.0b013e31828d3753
• (Kontrol No: 1129715)

Title: Is topical pharyngeal anesthesia necessary in esophagogastroduodenoscopy in all unsedated patients?

• Authors: Ergül Bilal, Sarıkaya Murat, Doğan Zeynal, Filik Levent, Bıyıkoğlu İbrahim
• Journal: Digestive Endoscopy
• Year: 2013
• Volume/Issue: 25(1)
• Pages: 90-91
• Citations: 2
• DOI: 10.1111/j.1443-1661.2012.01383.x
• (Kontrol No: 1129879)

Title: Inpatient Care Of Hepatitis C: Applying The Four Pillars Model To The Hospital Setting.

• Authors: Sarıkaya Murat, Filik Levent, Doğan Zeynal, Ergül Bilal
• Journal: Gastroenterology Nursing
• Year: 2013
• Volume/Issue: 36(2)
• Pages: 141-144
• DOI: 10.1097/SGA.0b013e31828d33db
• (Kontrol No: 1129712)

Title: "The "Bouveret's Syndrome" Case Resolved Without Necrotic Changes."

• Authors: Bilal Ergül, Murat Sarıkaya, Zeynal Doğan, Sevda İdil, Tarkan Karakan, Abdullah Çetin Köseoğlu
• Journal: Case Reports in Gastrointestinal Medicine
• Year: 2013
• Volume/Issue: 2013
• Article ID: 725434
• DOI: 10.1155/2013/725434
• (Kontrol No: 1131423)

Title: Severe acute pancreatitis due to hypertriglyceridemia.

• Authors: Sarıkaya Murat, Doğan Zeynal, Ergül Bilal, Filik Levent, Bıyıkoğlu İbrahim
• Journal: Case Reports in Gastrointestinal Medicine
• Year: 2013
• Volume/Issue: 2013
• Article ID: 945902
• DOI: 10.1155/2013/945902
• (Kontrol No: 1131425)

Title: Gallstone Ileus Caused by Cholecystoenteric Fistula Demonstrated on Computed Tomography.

• Authors: Sarıkaya Murat, Doğan Zeynal, Ergül Bilal, Filik Levent, Sevda İdil
• Journal: Case Reports in Medicine
• Year: 2013
• Volume/Issue: 2013
• Article ID: 652960
• DOI: 10.1155/2013/652960
• (Kontrol No: 1131426)

Title: Intestinal Perforation Due to Ingested Chicken Bone Mimicking Crohn's Disease.

• Authors: Sarıkaya Murat, Doğan Zeynal, Ergül Bilal, Filik Levent
• Journal: Case Reports in Gastrointestinal Medicine
• Year: 2013
• Volume/Issue: 2013
• Article ID: 604820
• DOI: 10.1155/2013/604820
• (Kontrol No: 1131427)

Title: Acute pancreatitis induced by hypertriglyceridemia: A case-based review.

• Authors: Sarıkaya Murat, Doğan Zeynal, Ergül Bilal, Filik Levent
• Journal: Turkish Journal of Gastroenterology
• Year: 2013
• Volume/Issue: 24(3)
• Pages: 276-280
• DOI: 10.4318/tjg.2013.0565
• (Kontrol No: 1129727)

Title: An Unusual Complication of Endoscopic Retrograde Cholangiopancreatography: Severe Acute Pancreatitis Leading to Death.

• Authors: Sarıkaya Murat, Doğan Zeynal, Ergül Bilal, Filik Levent, Tarkan Karakan
• Journal: Case Reports in Gastrointestinal Medicine
• Year: 2013
• Volume/Issue: 2013
• Article ID: 658370
• DOI: 10.1155/2013/658370
• (Kontrol No: 1131475)

Title: A Rare Cause of Abdominal Pain: Mesenteric Panniculitis.

• Authors: Sarıkaya Murat, Doğan Zeynal, Ergül Bilal, Filik Levent
• Journal: Case Reports in Gastrointestinal Medicine
• Year: 2013
• Volume/Issue: 2013
• Article ID: 925259
• DOI: 10.1155/2013/925259
• (Kontrol No: 1131476)

B. Contributions to Scientific Conferences:

Title: Suicidal poisonings in Turkey: demographic and clinical aspects.

• Authors: Sarikaya M., Gunes A., Goksu E., Erdogan G., Ozen C., Kaya A.
• Conference: 30th European Congress of Clinical Toxicology (EAPCCT)
• Year: 2000
• Abstract ID: P44
• (Kontrol No: 1131478)

Title: A Rare Cause of Gastrointestinal Bleeding: Aortoenteric Fistula.

• Authors: Doğan Zeynal, Sarıkaya Murat, Filik Levent, Ergül Bilal
• Conference: World Congress of Gastroenterology
• Year: 2013
• Abstract ID: P1367
• (Kontrol No: 1131479)

Specializations

Cancer Surgery

Pancreatic Surgery

Bile Duct Surgery

Bariatric Metabolic Surgery

Oncological Surgery

Breast Surgery

Gastric cancer

Colon cancer

Thyroid Cancer

Obesity Surgery

Diabetes Surgeries

Education

MD; Hacettepe University Faculty of Medicine (2001)

Residencies

Internal Medicine; Ministry of Health Ankara Diskapi Education and Research Hospital (2009)

Pathology; Gazi University Faculty of Medicine (2004)

Fellowships

Gastroenterology and Hepatology; Necmettin Erbakan University Faculty of Medicine (2013)

Experiences

Demiroglu Bilim University Faculty of Medicine, Department of Gastroenterology and Hepatology

Istanbul Florence Nightingale Hospital (2019- currently)

Alanya Alaaddin Keykubat University Faculty of Medicine, Department of Gastroenterology and Hepatology (2017-2019)

Bundang CHA Hospital, Seoul, Korea (2018)

Konya Education and Research Hospital, Department of Gastroenterology  (2014-2017)

Certificates

Advanced Endoscopy Certificate, Bundang CHA Hospital, Seoul, Korea, 2018

Bariatric Endoscopy Certificate, Bariatric Endoscopy Global course, Sao Paulo, Brazil, 2020

Awards

2019 Rising Star, 10th Digestive Disease and Endoscopy Symposium

Memberships

Turkish Society of Internal Medicine

Turkish Society of Gastroenterology

ERCP Study Group at Turkish Society of Gastroenterology

European Society of Gastrointestinal Endoscopy

Women in Endoscopy, American Society of Gastrointestinal Endoscopy

Education: 

Akdeniz University Faculty of Medicine 

Specialization Training: 

Baskent University Faculty of Medicine. Internal diseases 

Akdeniz University Faculty of Medicine, Gastroenterology Minor 

Worked Institutions: 

Tekirdag State Hospital (Compulsory Service) 

Demiroğlu Bilim University Faculty of Medicine, Gastroenterology 

Medical Interests: 

Endoscopy-Colonoscopy 

ERCP 

Hepatology 

Inflammatory Bowel Diseases 

Liver Transplantation

ACADEMIC CAREER SUMMARY

Degree: Bachelor's
Field: Medicine
University: Atatürk University
Year: 2001

Degree: Master's
Field: Medicine
University: Atatürk University
Year: 2001

Specialization/Doctorate: Internal Medicine/Gastroenterology
University: İnönü University
Year: 2012

Associate Professorship: Gastroenterology
University: İnönü University
Year: 2018

Foreign Language: English, 67.5, 2007

H-index (WoS/Google): 8/10

Impact Factor: 8.1577

Key Research Work:
“Does apocynin increase liver regeneration in the partial hepatectomy model?” Yılmaz Bilgiç, Burhan Hakan Kanat, Onural ÖZHAN, Azibe YILDIZ, Zeynep AKSUNGUR, Mehmet Erman ERDEMLİ, Nigar VARDI, Yusuf TÜRKÖZ, Sami AKBULUT, Adem KÖSE, Hakan PARLAKPINAR. Turkish Journal of Medical Sciences, 2023 (53), 1-12 Q3.

Declared Project Title, Year:
K.3.6. “Investigation of the Effects of Vinpocetine in Sepsis Created by Cecal Ligation and Puncture in Rats” (Principal Investigator), 2023

International Experience:
Advanced Endoscopy Training, Anam Hospital, South Korea (3 months, 2016)
Advanced ERCP Course, Olympus Training Center, Hamburg (2017)

ADMINISTRATIVE POSITIONS

• Institution: İnönü University Turgut Özal Medical Center
  City: Malatya
  Position: Assistant Chief Physician
  Period: 2021 - 2024

Education

Ondokuz Mayıs University Faculty of Medicine (1991)

KTÜ Faculty of Medicine Farabi Hospital (Specialization.1998)

Istanbul University Çapa Faculty of Medicine (Laparoscopic Surgery Training, 2002)

Istanbul University Çapa Faculty of Medicine (Laparoscopic Antireflux Surgery Training, 2006)

Istanbul University Cerrahpaşa Faculty of Medicine (General Surgery Clinic Advance Laparoscopic Surgery, Laparoscopic Bariatric Surgery, Morbid Obesity and Oncological Cancer Surgery Training, 2010i)

Specializations

Cancer Surgery

Pancreatic Surgery

Bile Duct Surgery

Bariatric Metabolic Surgery

Oncological Surgery

Breast Surgery

Gastric cancer

Colon cancer

Thyroid Cancer

Obesity Surgery

Diabetes Surgeries

Gastroenterology

Pendik Medipol University Hospital

Education

1999 Karadeniz Technical University, Gastroenterology

1997Atatürk University, Internal Diseases Professorship

1992 Atatürk University, Internal Diseases Associated Professorship 

1985 Atatürk University, Internal Diseases Specialist 

1981 Atatürk University Faculty of Medicine

Publications

1- Nihat Okçu Gülçin Polat,Arif Yılmaz,Mehmet Koruk,The demographıc features of gastrıc cancers ın erzurum(Eurasian J Med 2000; 32: 63-65)

2- Üst Gastrointestinal Kanamalı Olguların Bir Değerlendirilmesi. Klinik Bilimler-Doktor.2000, - E.akarsu,N.Okçu, ve Ark.Kuzeydoğu Anadolu’da 6:4:435-438

3-N.Okçu, A.yılmaz. İ.kiki,M.D.onuk, C.gündoğdu, H.uzunismail. Tanısal Üst Gastrointestinal endoskopi Sonuçlarımız. Atatürk Üniversitesi Tıp Dergisi 1997,29 (2):486

4-N. Okçu, M.gündoğdu, M.D. onuk, İ.kiki, l.cerrahoğlu, k.yılmaz, i. çapoğlu. Nonsteroid Anti İnflamatuar İlaç (NSAİİ) Kullanan Hastalarda oluşan Gastroduodenal Lezyonların Önlenmesinde Misoprostolün Yeri. Atatürk Üniversitesi Tıp Dergisi 1997,29 (2):453-455.

5-N.Okçu, A. öz, m.d. onuk, e.akarsu, b. tekin, h.z. tonbul, h.kaya. Kronik Aktif Hepatit İle Dekopanse Karaciğer Parankim Yetmezliğinde Plazma Fibronektin Düzeyleri ve Karaciğerin Fonksiyon Durumu İle İlişkisi. Türk J. Gastroenterol 1995;27(4): 422-426.

6-N.Okçu, tahir buran,m.d. onuk,a. yılmaz, e.akarsu, g. akçay. Erzurum ve Çevresinde Duodenum Ülserli Hastalarda Helicobacter Pylori Prevelansı. Türk J. Gastroenterol 1995;27(4): 447-450.

7-N.Okçu, b.s. uyanık, e. akarsu, e. bakan, z. tonbul. Mide ve Kolorektal Kanserlerinde Karbonhidrat Antijenleri (CA-19-9, CA-125), Karsinoembriyonik Antijen (CEA) ve Alkalen Fosfatazın Önemi. Türk J. Gastroenterol 1995;6:467-471.

8-N. Okçu, m.d. onuk, e. akarsu, h. doğan, c. gündoğdu. Bölgemizdeki Hepatoselüler Karsinomlu Hastalarda Major Risk Faktörleri. Gastroenteroloji 1994;5(2):154-157

9-N.Okçu, m.d. onuk, e. akarsu, h. doğan, c.gündoğdu, tahir buran. Erzurum Bölgesinde Gastrik Karsinom Sıklığı, Endoskopik ce Histolojik Özellikler. Gastroenteroloji 1994;5(2):263-267.

10-N. Okçu, m.d. onuk, tahir buran, e. akarsu, m.a. çiftçioğlu. Erzurum İli Çevresinde Nonspesifik Gastritli Olgularda Helicobacter Pylori Sıklığı. Gastroenteroloji 1994;5(2):211-213.

11-N.Okçu, m.d. onuk, ö. ünal, e. akarsu, l. incesu, k. akgöz. Karın İçi Kitle Lezyonlarında Ultrason Rehberliğinde Yapılan İnce İğne Aspirasyon Biyopsisinin Tanı Değeri. Gastroenteroloji 1993;4(1):166-68.

12-N.O.kçu, m.d. onuk, m. polat, a. yılmaz, m. gündoğdu, m. paç. Budd-Chiari Sendromu (2 Olgu). Türk J Gastroenterhepatol 1993; 4(1):77-80.

13-N.Okçu, h. koçak, m.d. onuk, m. gündoğdu, e. bakan, a. yılmaz, a. başoğlu, a. ateş, f.a. paç. The Effect of Atrial Pressure Changes and Cardiac Nerves on Plasma Atrial Natriüretic Peptide (ANP) Levels. Vascular Surgery 1993; 27(2): 128-132

15-N.Okçu, m.d. onuk, a.yılmaz, m. gündoğdu, t. buran. Omeprozol ve Ranitidinin Peptik Ülser İyileşmesine Etkileri. Doğa-Tr.J. of Medical Sciences 1992;16:657-658.

16-N. Okçu, m.r. yiğitoğlu, b. adam, e. bakan. Konjestif Kalp Yetersizliği Olan Hastalarda Digıxin’in Plazma Atrial Natriüretik Peptik Düzeyine Etkisi. S.Ü. Tıp Fak. Dergisi 1991;7(2):243-247..

17-N.Okçu, a. yılmaz. Üst Gastrointestinal Sistem Kanamalarında Histamin H2 -Reseptör Antagonistlerinin Etkisi. Endoskopi Dergisi 1991;2(4):17-23.

18-N.Okçu, E. bakan, b. adam, a. yılmaz, m.r. yiğitoğlu. Kronik Hepatit ve Karaciğer Sirozlu Hastalarda Seks Hormanları ve Seks Hormon Bağlayıcı Globülin Seviyeleri (Editöre Mektup). Doğa-Tr. J. Of Medical Sciences 1991;15:1-2.

19-N.Okcu Ömer Yılmaz.Helıcobacter pylorı and related gastroıntestınal system dıseases Turkiye Klinikleri JMed Sci. 2013;33(3):806-13

20-Nihat Okçu , Ömer yılmaz, hakan dursun, gülçin polat. Dispeptik semptomlarla beslenme alışkanlıkları, endoskopik ve histolojik bulgular arasındaki ilişki (Eurasian J Med 2006; 38: 13-17)

21-Mehmet Bilici,1Nihat Okcu,1Kerim Cayır,1Ibrahim Pirim,2Salim B. Tekin,1andCemal Gundogdu3 - Distribuion of HLA Tissue Groups in Patients with Gastric Cancer Eurasian J Med. 2010 Apr; 42(1): 9.11.

22-Nihat Okcu,Abdulhalim Bak,Mehmet Sari,Mehmet Arslan,Sait Kapicioglu :The fibroblast proliferation,relationship of hepatocyte growth factor (HGF) and interferon-A2A Gastroenterology April 2000Volume 118,Issue 4, Part 2, PageA1404

23-Kubra Kaynar,Sait Kapicioglu,Mehmet Sarı,Nihat Okcu,Abdulhalim Baki. The effect of fish oil on stress ulcer prophylaxis GastroenterologyVolume 118, Issue 4, Part 2, PageA1255

İlknur,Karakus Şeyma,Gültekin Serap,Özçınar Beyza,Özmen Vahit,İğci Abdullah,Müslümanoğlu Mahmut Ebudeccane,Dinçcag Sait Ahmet Der 18. SIS-Weltkongress zur Brustgesundheit 16.-19. September 2014 Orlando, USA 3-Axillary Lymph Node Ratio Is An Independent Prognostic Factor In Breast Cancer Üçüncü Muhammed Zübeyr, Karakuş Şeyma, Tükenmez Mustafa, Kaya Serdar, Yüksel Sercan, Özmen Vahit, Müslümanoğlu Mahmut Ebudeccane, Dinççağ Ahmet Sait, İğci Abdullah, Özçınar Beyza, Cabıoğlu Neslihan Der 18. SIS-Weltkongress zum Thema Brustgesundheit am 1. September -19.2014 Orlando, USA Dr. Muhammed Zübeyr Üçüncü ist Facharzt für Allgemeine Chirurgie und außerordentlicher Professor für Chirurgie mit einem Abschluss von der Medizinischen Fakultät der Universität Istanbul. Dr. Üçüncü verfügt über umfangreiche Erfahrung in der Behandlung von akuter biliärer Pankreatitis, Endoskopie, Trauma- und Notfallchirurgie, Fettleibigkeit und Brustgesundheit. Er hat mehrere Artikel in medizinischen Fachzeitschriften veröffentlicht und auf internationalen Konferenzen präsentiert.

UNIVERSITY

Ankara University Faculty of Medicine 

UNIVERSITY WHERE HE TAKES EXPERTISE

Göztepe Training and Research Hospital General Surgery

CONGRESSES ATTENDED

National Endoscopic Laparoscopic Surgery Congress

World Congress on Controversies to Consensus in Diabetes, Obesity and Hypertension

Bariatric and Metabolic Surgery Congress

Cerrahpaşa Surgery Meetings Turkish Bariatric Surgery Association

Assoz. Prof. Dr. Ibrahim Ertugrul ist Gastroenterologe mit den Spezialgebieten ERCP, Lebertransplantation, Gastroskopie, endoskopische Operationen, Leberbiopsie, Lebererkrankungen, Gallengangserkrankungen und Reflux. Er ist Absolvent der Medizinischen Fakultät der Universität Istanbul und spezialisiert auf Innere Medizin und Gastroenterologie. Er ist Mitglied der Turkish Gastroenterology Association, der Turkish Liver Research Association und der Gastrointestinal Endoscopy Association.

https://www.medistate.com.tr/en/physicians/ahmet-burak-toros