Department of Gastroenterology and Hepatology;
University Clinical Center Tuzla;
Tuzla 75000;
Tuzlanski Kanton;
Bosnia and Herzegovina;
Department of Nephrology;
Dialysis and Transplantation;
University Clinical Center Tuzla;
Tuzla 75000;
Tuzlanski Kanton;
Bosnia and Herzegovina;
Inflammatory bowel disease; Crohn's disease; Ulcerative colitis; Indeterminate colitis; Epidemiology; Endoscopy;