1. St. Elisabeth University of Health Care and Social Work, Námestie 1. mája, 080 00 Bratislava , Slovak Republic
2. Department of Epidemiology, Faculty of Medicine, University of P. J. Šafárik, Šrobárova 2, 041 80 Košice , Slovak Republic
3. Department of Infectology and Travel Medicine, Faculty of Medicine, University of P. J. Šafárik, Rastislavova 43, 041 90 Košice , Slovak Republic
4. Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 040 01 Košice , Slovak Republic
5. First Department of Internal Medicine, Faculty of Medicine, University of P. J. Šafárik, Trieda SNP 1, 040 11 Košice , Slovak Republic