[1] Univ Athens, Dept Pediat 1, Athens, Greece
[2] St Panteleimon Gen Hosp Nikea, Athens, Greece
[3] Laikon Gen Hosp, Thalassemia Ctr, Athens, Greece
[4] Aristotle Univ Thessaloniki, Pediat Clin 1, Hippokratio Gen Hosp, GR-54006 Thessaloniki, Greece
[5] Hippokrat Gen Hosp Thessaloniki, Thalassaemia Unit, Thessaloniki, Greece
[6] Novartis Hellas SACI, Athens, Greece
[7] Gen Hosp Volos, Thalassemia Unit, Volos, Greece
[8] Korgialeneio Mpenakio Gen Hosp, Thalassemia Unit, Athens, Greece
[9] Gen Hosp Kalamata, Thalassemia Unit, Kalamata, Greece