1. Clinical Hospital Centre Zagreb, Sestre Milosrdnice University Hospital, Clinic of Internal Medicine, Zagreb, Croatia
2. University Hospital for Infectious Diseases „Dr. Fran Mihaljević”, Zagreb, Croatia
3. University Hospital for Infectious Diseases „Dr. Fran Mihaljević”, Zagreb, Croatia and University of Zagreb School of Medicine, Croatia
4. Faculty of Veterinary Medicine, University of Zagreb, Department of Microbiology and Infectious Diseases with Clinic, Laboratory for Leptospires, Croatia