Departments of Gastroenterology, Acıbadem University, School of Medicine, İstanbul
2.Departments of Division of General Surgery, Acıbadem Hospital, istanbul
3.Departments of Internal Medicine and General Surgery, Acıbadem University, School of Medicine, İstanbul
4.Türkiye yüksek İhtisas Hastanesi Gastroenteroloji Kliniği, Ankara
5.Departments of, Division of General Surgery Acıbadem Hospital, İstanbul
6.Departments of Internal Medicine, Surgery and Pathology of Cerrahpaşa Medical Faculty of the University of İstanbul