1. University Clinical Center of Vojvodina, Eye Clinic, Novi Sad, Serbia + University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia
2. University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia
3. University Clinical Center of Vojvodina, Eye Clinic, Novi Sad, Serbia + University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia + Academy of Medical Science of the Serbian Medical Society, Beograd, Serbia