Affiliation: | 1. Institute of Epidemiology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia;2. Clinic of Dermatovenereology, Clinical Center of Serbia, Belgrade, Serbia;3. Institute of Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, Belgrade, Serbia;4. Institute of Social Medicine, Faculty of Medicine, University of Belgrade, Belgrade, Serbia;5. Department of Dermatovenereology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia |