1. Radiology Department; Institute for Children and Adolescents Health Care of Vojvodina, Medical Faculty, University of Novi Sad; Hajduk Veljkova 10 21000 Novi Sad Serbia
2. Pediatric Surgery Department; Institute for Children and Adolescents Health Care of Vojvodina, Medical Faculty, University of Novi Sad; Hajduk Veljkova 10 21000 Novi Sad Serbia