[1] Univ Sao Paulo, Hosp Clin, Ribeirao Preto Med Sch, Dept Pediat, Ave Bandeirantes 3900, Ribeirao Preto, SP, Brazil
[2] Univ Sao Paulo, Ribeirao Preto Med Sch, Dept Genet, Ave Bandeirantes 3900, Ribeirao Preto, SP, Brazil
[3] Univ Childrens Hosp Zurich, Childrens Res Ctr, Neurooncol Grp, Dept Oncol, August Forel Str 1, CH-8008 Zurich, Switzerland
[4] NCT Heidelberg KiTZ, Hopp Childrens Canc Ctr, Pediat Glioma Res Grp, D-69120 Heidelberg, Germany
[5] German Canc Res Ctr, D-69120 Heidelberg, Germany
[6] Univ Sao Paulo, Dept Pathol, Ave Bandeirantes 3900, BR-14049900 Ribeirao Preto, SP, Brazil
[7] Univ Sao Paulo, Hosp Clin, Ribeirao Preto Med Sch, Div Pediat Neurosurg,Dept Surg & Anat, Ave Bandeirantes 3900, Ribeirao Preto, SP, Brazil
[8] Univ Campinas UNICAMP, Boldrini Ctr Children, Campinas, SP, Brazil
[9] Univ Sao Paulo, Dept Neurol, Fac Med, Sao Paulo, Brazil