[1] Erasmus MC, Sophia Childrens Hosp, Dept Pediat Hematol Oncol, Wytemaweg 80, NL-3015 CN Rotterdam, Netherlands
[2] Univ Childrens Hosp, Div Hematol, Zurich, Switzerland
[3] McMaster Univ, Dept Pediat, Hamilton, ON, Canada
[4] Hosp Pediat Prof Dr Juan P Garrahan, Serv Hematol & Oncol, Buenos Aires, DF, Argentina
[5] Univ Colorado, Dept Pediat, Anschutz Med Campus, Denver, CO 80202 USA
[6] Royal Hosp Children, Dept Hematol, Glasgow, Lanark, Scotland
[7] McMaster Univ, Dept Pediat, Hamilton, ON, Canada
[8] Johns Hopkins Univ, Sch Med, Dept Pediat, Div Hematol, Baltimore, MD 21205 USA
[9] Johns Hopkins Univ, Sch Med, Dept Med, Div Hematol, Baltimore, MD 21205 USA
[10] Johns Hopkins All Childrens Hosp, Thrombosis & Stroke Programs, St Petersburg, FL USA
[11] Johns Hopkins All Childrens Inst Clin & Translat, St Petersburg, FL USA
[12] Charite, Dept Pediat Hematol Oncol, Berlin, Germany
[13] Univ Melbourne, Murdoch Childrens Res Inst, Hematol Res Grp, Dept Pediat, Melbourne, Vic, Australia
[14] Royal Childrens Hosp, Dept Clin Hematol, Melbourne, Vic, Australia
[15] Dept Pediat Hematol Oncol, Munster, Germany
[16] Univ Munster, Univ Hosp Kiel Lubeck, Inst Clin Chem, Kiel, Germany
[17] Hebrew Univ Jerusalem, Shaare Zedek Med Ctr, Pediat Hematol Oncol Unit, Jerusalem, Israel
[18] Hosp Pediat Prof Dr Juan P Garrahan, Serv Hematol & Oncol, Buenos Aires, DF, Argentina
[19] Mahidol Univ, Ramathibodi Hosp, Fac Med, Dept Pediat, Bangkok, Thailand
[20] Med Univ Vienna, Dept Pediat, Vienna, Austria