Department of Internal Medicine, Director - Fellowship and Residents Research Program, Faculty of Medicine American University of Beirut Medical Center, Beirut, Lebanon. ataher@aub.edu.lb. Emory School of Medicine, Atlanta, USA. ataher@aub.edu.lb. Ospedale Pediatrico Microcitemico 'A.Cao', A.O. 'G. Brotzu', Cagliari, Italy. Universita della Campania "L. Vanvitelli,", Caserta, Italy. Hematology Division, Department of Internal Medicine, University of Patras Medical School, Patras, Greece. U.O.C. Ematolog. Con Talassemia, A.O. Civico-Di Cristina-Benfratelli, Palermo, Italy. First Department of Pediatrics, University of Athens, Athens, Greece. Department of Medicine, Hospital Pulau Pinang, Georgetown, Penang, Malaysia. Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA. Novartis Pharma AG, Basel, Switzerland. Novartis Pharma AG, Basel, Switzerland. University College London, London, UK.