[1] Univ Milan, Fdn IRCCS Osped Maggiore Policlin Mangiagalli & R, Milan, Italy
[2] I Policlin II Univ Napoli, Naples, Italy
[3] Istanbul Univ, Istanbul Sch Med, Div Pediat Hematol Oncol, Istanbul, Turkey
[4] Ege Univ, Fac Med, Izmir, Turkey
[5] Osped Civ & Benefratelli G Di Cristina M Ascoli, Palermo, Italy
[6] Suleyman Demirel Univ, Fac Med, TR-32200 Isparta, Turkey
[7] Hosp Ninos Dr Ricardo Gutierrez, Buenos Aires, DF, Argentina
[8] Cukurova Univ, Fac Med, Dept Pediat Hem Onc, Adana, Turkey
[9] Az Osped Riliervo Nazl & Alta Spec Garibaldi, Catania, Italy
[10] UCL, London, England
[11] Univ Turin, Turin, Italy
[12] Novartis Pharmaceut, E Hanover, NJ USA
[13] Novartis Pharma AG, Basel, Switzerland
[14] Univ Athens, Dept Pediat 1, Athens, Greece