1. Medical Faculty, University of Novi Sad, Hajduk Vejkova 3, 21000 Novi Sad, Serbia
2. Clinic of Psychiatry, University Clinical Centre of Vojvodina, Hajduk Veljkova 4, 21000 Novi Sad, Serbia
3. Faculty of Science, Department of Psychology, University of Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia
4. Clinic of Dermatology, University Clinical Centre of Vojvodina, Hajduk Veljkova 4, 21000 Novi Sad, Serbia
5. Clinic of Gastroenterology and Hepatology, University Clinical Centre of Vojvodina, Hajduk Veljkova 4, 21000 Novi Sad, Serbia