1. University of Novi Sad, Faculty of Medicine Novi Sad + Special Hospital for Rheumatic Diseases, Novi Sad
2. University of Novi Sad, Faculty of Medicine Novi Sad + Clinical Center of Vojvodina, Clinic of Orthopedic Surgery and Traumatology, Novi Sad
3. University of Novi Sad, Faculty of Medicine Novi Sad + Oncology Institute of Vojvodina, Department of Medical Oncology, Sremska Kamenica
4. University of Novi Sad, Faculty of Medicine Novi Sad