Departments of Internal Medicine İstanbul University School of Medicine, İstanbul
2.Departments of Gastroenterohepatology, İstanbul University İstanbul Medical Faculty, İstanbul
3.Departments of Public Health and Biostatistics, İstanbul University İstanbul Medical Faculty, İstanbul
4.Department of Gastroenterology, İstanbul University, İstanbul School of Medicine, İstanbul
5.İstanbul Üniversitesi, İstanbul Tıp Fakültesi Gastroenteropatoloji Bilim Dalı ve Patoloji anabilim Dalı, İstanbul