1. University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia + University Clinical Center of Vojvodina, Medical Rehabilitation Clinic, Novi Sad, Serbia
2. University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia + Special Hospital for Rheumatic Diseases, Novi Sad, Serbia
3. Special Hospital for Rheumatic Diseases, Novi Sad, Serbia
4. University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia
5. University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia + University Clinical Center of Vojvodina, Department of Orthopedic Surgery and Traumatology, Novi Sad, Serbia
6. University Clinical Center of Vojvodina, Department of Abdominal and Endocrine Surgery, Novi Sad, Serbia