1. Department of Nephrology, 1st Faculty of Medicine and General University Hospital, Charles University, 128 08 Prague, Czech Republic
2. Nordic Bioscience, 2730 Herlev, Denmark
3. Institute of Medical Biochemistry and Laboratory Diagnostics, 1st Faculty of Medicine and General University Hospital, Charles University, 128 08 Prague, Czech Republic
4. Department of Clinical and Transplant Pathology, Institute of Clinical and Experimental Medicine, 140 21 Prague, Czech Republic
5. Consultant of Chemometrics, 140 00 Prague, Czech Republic