[1] Univ Athens, Aghia Sophia Childrens Hosp, Univ Res Inst Study & Treatment Childhood & Malig, Athens, Greece
[2] Univ Athens, Aghia Sophia Childrens Hosp, Dept Pediat 1, Hematol Oncol Unit, Athens, Greece
[3] Acad Athens, Biomed Res Fdn, Ctr Basic Res 2, Prote Res Unit,Div Biotechnol, Athens, Greece