1. Ferona Fertility Clinic, Sarplaninska 19, 21000 Novi Sad, Serbia
2. Faculty of Sciences, Department of Biology and Ecology, University of Novi Sad, Trg Dositeja Obradovica 2, 21000 Novi Sad, Serbia
3. Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia