Department of Hepatobiliary and Pancreatic Surgery;
First Surgical University Hospital;
Clinical Center of Serbia;
School of Medicine;
University of Belgrade;
St. Joseph’s Hospital Health Center;
Clinic for Gynecology and Obstetrics;
Clinical Center of Serbia;
School of Medicine;
University of Belgrade;
Clinic for Gastroenterology and Hepatology;
Clinical Center of Serbia;
School of Medicine;
University of Belgrade;
Clinic for Gastroenterology and Hepatology;
University Hospital Zemun;