1. Division of Nephrology and Hypertension Department of Internal Medicine Faculty of Medicine American University of Beirut Beirut Lebanon
2. Division of Renal Pathology and Electron Microscopy Department of Pathology Yale University School of Medicine New Haven Connecticut USA
3. Division of Anatomic Pathology Department of Pathology and Laboratory Medicine Faculty of Medicine American University of Beirut Beirut Lebanon
4. Section of Nephrology Department of Internal Medicine Yale University School of Medicine New Haven Connecticut USA