[1] Univ Antwerp, Antwerp Univ Hosp, Dept Pediat Haematol & Oncol, Edegem, Belgium
[2] Uganda Canc Inst, Dept Pediat Oncol, Kampala, Uganda
[3] Cairo Univ, Natl Canc Inst, Radiat Oncol Dept, Cairo, Egypt
[4] Childrens Canc Hosp, Cairo, Egypt
[5] European Org Res Treatment Canc, Stat Dept, Brussels, Belgium
[6] Childrens Univ Hosp Nino Jesus, Pediat Oncol Hematol Dept, Pediat OncoGen Unit, Madrid, Spain
[7] Univ Witwatersrand, Charlotte Maxeke Johannesburg Acad Hosp, Div Pediat Haematol & Oncol, Dept Pediat & Child Hlth,Fac Hlth Sci, Johannesburg, South Africa
[8] Franco African Pediat Oncol Grp, Villejuif, France
[9] Gustave Roussy Inst, Villejuif, France
[10] Univ Stellenbosch, Tygerberg Childrens Hosp, Dept Pediat & Child Hlth, Stellenbosch, South Africa
[11] Banso Baptist Hosp, Kumbo, Cameroon
[12] Univ Toronto, Hosp Sick Children, Pediat Oncol, Toronto, ON, Canada
[13] Univ Mohamed V Rabat, Pediat Haematol & Oncol Ctr, Rabat, Morocco