1. Department of Nephrology and Dialysis, Sibenik General Hospital, Stjepana Radica 83 a, 22 000 Sibenik , Croatia
2. B. Braun Avitum Polyclinic for Medicine and Dialysis, Zagreb , Croatia
3. Dr. Fran Mihaljevic University Hospital for Infectious Diseases, University of Zagreb School of Medicine, Zagreb , Croatia
4. Department of Nephrology and Dialysis, Sveti Duh General Hospital, Zagreb , Croatia
5. Department of Nephrology and Dialysis, University Hospital Center, University of Zagreb School of Medicine, Zagreb , Croatia
6. Department of Nephrology and Dialysis, University Hospital Center, University of Rijeka School of Medicine, Rijeka , Croatia