1. 1 University Hospital of Nephrology, Faculty of Medicine, SS Cyril and Methodius Skopje , RN Macedonia
2. 2 City General Hospital 8th September- Department of Diagnostic and Interventional Radiology, Faculty of Medicine, SS Cyril and Methodius Skopje RN Macedonia
3. 3 PHI Institute of Nephrology , Struga , RN Macedonia
4. 4 University Hospital of Cardiology, Faculty of Medicine, SS Cyril and Methodius Skopje , RN Macedonia