1. Thomayer Hospital Videnska 800 PragueCzech Republic
2. Research Institute of Brewing and Malting, PLC Prague Czech Republic
3. Faculty of Pharmacy Charles University Hradec Králové Czech Republic
4. Department of Medical Microbiology 2nd Faculty of Medicine Charles University in Prague and University Hospital Motol Prague 5 Czech Republic
5. Institute of Microbiology Czech Academy of Sciences Prague 4Czech Republic
6. Faculty of Military Medical Sciences University of Defence Hradec Kralove Czech Republic