1. University of Niš, Faculty of Medicine, Niš, Serbia + Clinical Center Niš, Clinic for Mental Health Protection, Niš, Serbia
2. Military Medical Academy, Clinic for Psychiatry, Belgrade, Serbia + University of Defence, Faculty of Medicine of the Military Medical Academy, Belgrade, Serbia
3. Clinical Center Niš, Clinic for Mental Health Protection, Niš, Serbia + Institute for Therapy and Rehabilitation Niška Banja, Niš, Serbia