1. Department of Social and Behavioural Medicine, Faculty of Medicine, Pavol Jozef Safarik University, Trieda SNP 1, 040 11 Kosice, Slovakia
2. Center for Mental Functions, Crystal Comfort, LLC, M. R. Stefanika 2427, 093 01 Vranov nad Toplou, Slovakia
3. 2nd Department of Psychiatry, University Hospital of Louis Pasteur, Rastislavova 43, 041 90 Kosice, Slovakia
4. Department of Pathological Physiology, Faculty of Medicine, Pavol Jozef Safarik University, Trieda SNP 1, 040 11 Kosice, Slovakia
5. Department of Human Physiology, Faculty of Medicine, Pavol Jozef Safarik University, Trieda SNP 1, 040 11 Kosice, Slovakia