1. Department of Internal Medicine, MedStar Health, Baltimore, MD
2. Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
3. Faculty of Medicine, American University of Beirut, Beirut, Lebanon
4. Department of Obstetrics and Gynecology, American University of Beirut Medical Center, Beirut, Lebanon
5. Department of Internal Medicine, Division of Hematology-Oncology, Naef K. Basile Cancer Institute, American University of Beirut Medical Center, Beirut, Lebanon.