1. Department of Nephrology, Hypertension, Dialysis and Transplantation, University Hospital Center Zagreb, 10000 Zagreb, Croatia
2. School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
3. Croatian Institute of Public Health, 10000 Zagreb, Croatia
4. Axon Lab d.o.o., 10000 Zagreb, Croatia
5. Department of Nephrology and Dialysis, General Hospital Zadar, 23000 Zadar, Croatia
6. Department of Nephrology, Dialysis and Transplantation, Clinical Hospital Center Osijek, 31000 Osijek, Croatia
7. Department of Nephrology and Dialysis, University Hospital Dubrava, 10000 Zagreb, Croatia
8. Department of Nephrology, Clinical Hospital Varazdin, 42000 Varazdin, Croatia
9. Policlinic for Internal Medicine and Dialysis B. Braun Avitum, 10000 Zagreb, Croatia
10. Department of Nephrology and Dialysis, University Clinical Hospital Centre “Sestre Milosrdnice”, 10000 Zagreb, Croatia
11. Policlinic for Dialysis Fresenius Sveti Duh 2, 10000 Zagreb, Croatia
12. Clinical Institute for Laboratory Diagnostics, University Hospital Center Zagreb, 10000 Zagreb, Croatia