1. Department of Internal Medicine and Gastroenterology, University Hospital and Faculty of Medicine, Masaryk University Brno, Jihlavska 20, 625 00 Brno, Czech Republic
2. Department of Clinical Microbiology, University Hospital, 625 00 Brno, Czech Republic
3. Department of Laboratory Methods, Faculty of Medicine, Masaryk University Brno, 625 00 Brno, Czech Republic
4. Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic