1. Department of Dermatovenerology, Faculty of Medicine, University Hospital, P. J. Safarik University, 040 01 Kosice, Slovakia
2. Department of Health Psychology and Research Methodology, Faculty of Medicine, P. J. Safarik University, 040 01 Kosice, Slovakia
3. Olomouc University Social Health Institute, Palacky University Olomouc, 779 00 Olomouc, Czech Republic
4. Department of Public Health and Hygiene, Faculty of Medicine, P. J. Safarik University, 040 01 Kosice, Slovakia