1. Department of Internal Medicine, Ufuk University School of Medicine, 06520 Ankara, Turkey
2. Division of Nephrology, Department of Internal Medicine, Ufuk University School of Medicine, 06520 Ankara, Turkey
3. Department of Pathology, Hacettepe University School of Medicine, 06100 Ankara, Turkey
4. Division of Hematology, Department of Internal Medicine, Ufuk University School of Medicine, 06520 Ankara, Turkey