1. Department of Nephrology, Medical Faculty, University Sts. Cyril and Methodius, Skopje, North Macedonia.
2. Department of Nephrology, University of Medicine of Tirana, Tirana, Albania.
3. Department of Internal Medicine and Diabetes, General Public Hospital Strumica, Strumica, North Macedonia.
4. Department of Cardiology, Medical Faculty, University Sts. Cyril and Methodius, Skopje, North Macedonia.