Department of General Surgery, Başkent University Faculty of Medicine, Ankara
2.Departments of Surgery, Çankırı State Hospital, Çankırı
3.Department of Gastroenterology, Medicana International Ankara Hospital, Ankara
4.Department of Pathology, Başkent University Faculty of Medicine, Ankara
5.Department of General Surgery, Başkent University, School of Medicine, Ankara
6.Department of Gastroenterology, Güven Hospital, Ankara
7.Başkent Üniversitesi Tıp Fakültesi İç Hastalıkları, Patoloji ve Genel Cerrahi Anabilim Dalları, Ankara