1. State University of Novi Pazar, Department of Biomedical Sciences, Novi Pazar + Faculty of Medicine, Novi Sad
2. Faculty of Medicine, Novi Sad + Clinic for Infectious Diseases, Novi Sad
3. State University of Novi Pazar, Department of Biomedical Sciences, Novi Pazar
4. Faculty of Medicine, Novi Sad + Clinical Center of Vojvodina, Clinic for Medical Rehabilitation, Novi Sad