1. Veterinary Research Institute; Mycobacteriology Unit; O.I.E. Reference laboratories for Paratuberculosis and Avian Tuberculosis; Brno Czech Republic
2. Department of Clinical Microbiology and Parasitology; County Hospital Pribram; Pribram Czech Republic
3. Department of Dermatovenerology; General University Hospital and 1st Faculty of Medicine Charles University Prague; Praque Czech Republic