1. Biomedical Research Center of Slovak Academy of Sciences Bratislava Slovakia
2. Faculty of Medicine, Institute of Laboratory Medicine University of Ostrava Ostrava Czech Republic
3. Institute of Microbiology of the Czech Academy of Sciences Prague Czech Republic
4. Faculty of Science Charles University Prague Czech Republic
5. Anaerobic Bacteria Reference Laboratory, Faculty of Medicine, Institute of Laboratory Medicine University of Ostrava Ostrava Czech Republic
6. Laboratory of Clinical Microbiology, Faculty Hospital Central Military Hospital Ružomberok Slovakia
7. Science and Research Department, Faculty Hospital Central Military Hospital Ružomberok Slovakia