1. Department of Internal Medicine, Division of Hematology and Oncology, Naef K. Basile Cancer Institute, American University of Beirut Medical Center, American University of Beirut Medical Center, Beirut, Lebanon
2. Department of Pediatrics, American University of Beirut Medical Center, American University of Beirut Medical Center, Beirut, Lebanon
3. Department of Surgery, American University of Beirut Medical Center, American University of Beirut Medical Center, Beirut, Lebanon