1. Department of Infectious and Tropical Diseases; First Faculty of Medicine; Charles University in Prague and Na Bulovce Hospital; Prague 8 Czech Republic
2. Department of Infectious Diseases; First Faculty of Medicine; Charles University in Prague and Military University Hospital Prague; Prague 6 Czech Republic
3. Department of Infectious Diseases; Faculty of Medicine; Charles University and Teaching Hospital; Hradec Kralové Czech Republic
4. Institute of Clinical Immunology and Allergology; Faculty of Medicine; Charles University and Teaching Hospital; Hradec Kralové Czech Republic