1. Internal Medicine Clinic, Ministry of Health lstanbul Kanuni Sultan Suleyman Education and Research Hospital, Istanbul, Turkey
2. Department of Intenal Medicine, Istanbul Bilim University, Istanbul, Turkey
3. Department of Nephrology, Goztepe Training and Research Hospital, Istanbul Medeniyet University, Istanbul, Turkey
4. Department of Nephrology, Bezmialem Vakif University School of Medicine, Istanbul, Turkey
5. Department of Nephrology, Faculty of Medicine, Atatürk University, Erzurum, Turkey