Affiliation: | (1) Institute of Epidemiology, Faculty of Medicine, University of Belgrade, Visegradska 26A, 11000 Belgrade, Serbia;(2) Faculty of Sport and Physical Education, University of Belgrade, Blagoja Parovica 156, 11000 Belgrade, Serbia;(3) Department of Preventive Medicine, Student Public Health Center, University of Belgrade, Krunska 57, 11000 Belgrade, Serbia |