1. Department of Kidney Transplantation and Renal Replacement Therapy, Biomedical Center of the Faculty of Medicine in Pilsen, Pilsen, Czech Republic
2. Sikl’s Department of Pathology, University Hospital in Pilsen, Pilsen, Czech Republic
3. Department of Zoology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
4. Department of Dermatovenereology, Second Faculty of Medicine, Bulovka University Hospital, Charles University, Prague, Czech Republic
5. National Reference Laboratory for Papillomaviruses and Polyomaviruses, Institute Hematology and Blood Transfusion, Prague, Czech Republic
6. Department of Genetics and Microbiology, Faculty of Science, Charles University, Prague, Czech Republic
7. Department of Genetics, Biopticka Laborator s.r.o., Pilsen, Czech Republic