1. Head of Intermediate Intensive Care Unit, University of Novi Sad, Faculty of Medicine, Institute for Child and Youth Health Care of Vojvodina, Hajduk Veljkova 10, Novi Sad, Serbia
2. Clinic for Pediatric Surgery, University of Novi Sad, Faculty of Medicine, Institute for Child and Youth Health Care of Vojvodina, Hajduk Veljkova 10, Novi Sad, Serbia
3. Head of Intensive Care Unit and Neonatology, University of Novi Sad, Faculty of Medicine, Institute for Child and Youth Health Care of Vojvodina, Hajduk Veljkova 10, Novi Sad, Serbia