[1] George Papanicolaou Hosp, Dept Haematol, BMT Unit, Thessaloniki 57010, Greece
[2] Evaggelismos Hosp, Dept Hematol, Athens, Greece
[3] Evaggelismos Hosp, Bone Marrow Transplantat Unit, Athens, Greece
[4] ATTIKON Gen Univ Hosp, Med Sch Athens, Hematol Unit, Dept Internal Med 2, Haidari, Greece
[5] Univ Hosp Patras, Div Hematol, Rion, Greece
[6] Metaxa Hosp, Dept Haematol, Piraeus, Greece