[1] Princess Maxima Ctr Pediat Oncol, Utrecht, Netherlands
[2] Erasmus MC, Dept Pediat Oncol Hematol, Sophia Childrens Hosp, Rotterdam, Netherlands
[3] CHC Liege, Clin Esperance, Div Pediat Hematol Oncol, Montegnee, Belgium
[4] CHU Nantes, Nantes, France
[5] CHRU Nancy, Childrens Hosp, Dept Hematol & Oncol, Vandoeuvre Les Nancy, France
[6] Schneider Childrens Med Ctr Israel, Pediat Hematol Oncol, Petah Tiqwa, Israel
[7] Childrens Hosp Westmead, Canc Ctr Children, Westmead, NSW, Australia
[8] Cent Hosp Southern Pest, Pediat Hematol & Stem Cell Transplantat Dept, Natl Inst Hematol & Infect Dis, Budapest, Hungary
[9] Chinese Univ Hong Kong, Dept Paediat, Prince Wales Hosp, Hong Kong, Peoples R China
[10] Natl Ctr Child Hlth & Dev, Dept Pediat Hematol & Oncol Res, Tokyo, Japan
[11] First Pavlov State Med Univ St Petersburg, Raisa Gorbacheva Mem Sci Inst Children Oncol Hema, St Petersburg, Russia
[12] Rigshosp Univ Hosp, Dept Pediat & Adolescent Med, Copenhagen, Denmark
[13] Univ Childrens Hosp Zurich, Zurich, Switzerland