[1] Laiko Univ, Gen Hosp Athens, Thalassemia Ctr, Athens, Greece
[2] Gen Hosp Agios Panteleimon Nikea, Piraeus, Greece
[3] Univ Athens, Agia Sofia Childrens Hosp, Thalassemia Unit, Dept Pediat 1, Athens, Greece
[4] Aristotle Univ Thessaloniki, Thalassaemia Unit, Paediat Dept 1, Hippokrat Gen Hosp Thessaloniki, GR-54006 Thessaloniki, Greece
[5] Hippokrateon Hosp, Adult Thalassemia Unit, Dept Internal Med 2, Thessaloniki, Greece
[6] Univ Patras, Sch Med, Dept Internal Med, Div Hematol, GR-26110 Patras, Greece
[7] Gen Hosp Trikala, Trikala, Greece
[8] Ioannina Univ Hosp, Thalassemia Unit, Dept Clin Hematol, Ioannina, Greece
[9] Childrens Hosp Athens Agia Sofia, Athens, Greece
[10] Gen Hosp Achilopouleio Volos, Volos, Greece
[11] Drakopouleio Blood Ctr Athens, Athens, Greece
[12] Venizel Gen Hosp Heraklion, Thalassaemia Unit, Iraklion, Greece
[13] Gen Hosp Agios Pavlos Thessaloniki, Thessaloniki, Greece
[14] Univ Hosp Larissa, Larisa, Greece
[15] Gen Hosp Corfu, Thalassaemia Unit, Corfu, Greece
[16] Karamandaneio Childrens Hosp, Patras, Greece
[17] Gen Hosp Vostanio Mytilini, Mitilini, Greece
[18] Gen Hosp Kalamata, Kalamata, Greece