American University of Beirut Medical Center, Beirut, Lebanon. Ospedale Pediatrico Microcitemico "A. Cao,", University of Cagliari, Cagliari, Italy. Department of Pediatrics, Second University of Naples, Naples, 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, New Jersey, USA. Novartis Pharma AG, Basel, Switzerland. Department of Haematology, University College London, London, UK.