1. Ibrahim Koral Onal:
Department of Gastroenterology, Gazi University Medical School, Ankara, Turkey
2. Murat Kekilli:
Department of Gastroenterology, Ankara Education and Research Hospital, Ankara, Turkey
3. Alpaslan Tanoglu:
Department of Gastroenterology, Gulhane Military Medical Academy, Haydarpasa Training Hospital, Uskudar, Turkey
4. Harun Erdal:
Department of Gastroenterology, Gazi University Medical School, Ankara, Turkey
5. Mehmet Ibis:
Department of Gastroenterology, Gazi University Medical School, Ankara, Turkey
6. Mehmet Arhan:
Department of Gastroenterology, Gazi University Medical School, Ankara, Turkey