[1] Hosp Pediat Prof Dr JP Garrahan, Hematol & Oncol, Buenos Aires, DF, Argentina
[2] Hosp St Joan de Deu, Hematol & Oncol, Barcelona, Spain
[3] Hosp Pediat Prof Dr JP Garrahan, Ophthalmol, Buenos Aires, DF, Argentina
[4] Hosp Pediat Prof Dr JP Garrahan, Clin Pharmacokinet Unit, Buenos Aires, DF, Argentina
[5] Hosp Pediat Prof Dr JP Garrahan, Pathol, Buenos Aires, DF, Argentina
[6] Consejo Nacl Invest Cient & Tecn, Natl Sci & Tech Res Council, Buenos Aires, DF, Argentina
[7] Hosp St Joan de Deu, Mol Oncol, Barcelona, Spain