1 Faculty of Medicine, American University of Beirut, Beirut, Lebanon.
2 Division of Hematology-Oncology, Department of Internal Medicine, American University of Beirut Medical Center, P.O. Box 11-0236, Beirut, 11072020, Lebanon.
3 Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.
4 Department of Dermatology, American University of Beirut Medical Center, Beirut, Lebanon.
5 Division of Hematology-Oncology, Department of Internal Medicine, American University of Beirut Medical Center, P.O. Box 11-0236, Beirut, 11072020, Lebanon. ataher@aub.edu.lb.