1. Macedonian Academy of Sciences and Arts Skopje , N. Macedonia
2. Department of Urology, Medical Faculty , University of Ss. Cyril and Methodius , Skopje , N. Macedonia
3. Department of Nephrology, Medical Faculty , University of Ss. Cyril and Methodius , Skopje , N. Macedonia
4. Association of Renal Patients “Nefron” , Skopje