[1] Aristotle Univ Med Sci Thessaloniki, Fac Hlth Sci, Med Sch, Dept Pharmacol, Thessaloniki, Greece
[2] Hippokrateion Hosp, Adult Thalassemia Unit, Thessaloniki, Greece
[3] Aristotle Univ Thessaloniki, AHEPA Hosp, Dept Internal Med 1, Thessaloniki, Greece
[4] AHEPA Hosp, Adult Thalassemia Unit, Thessaloniki, Greece
[5] Gen Hosp Larissa, Thalassemia & Sickle Cell Dis Unit, Larisa, Greece
[6] UCL, Dept Haematol, London, England