Department of Gastroenterology and Psychiatry, Baflkent University School of Medicine, Ankara
2.Department of Gastroenterology, Medicana International Ankara Hospital, Ankara
3.Departments of Hepatology and Nutrition and Pathology, Başkent University Faculty of Medicine, Ankara
4.Department of Gastroenterology, Anadolu Hospital, Kocaeli
5.Baskent University Faculty of Medicine, Departments of Oncology, Ankara
6.Department of Gastroenterology, Güven Hospital, Ankara