[1] Univ Childrens Hosp Munster, Munster, Germany
[2] Univ Childrens Hosp Zurich, Zurich, Switzerland
[3] Univ Colorado, Dept Pediat, Sect Hem Onc BMT, Aurora, CO USA
[4] Univ Colorado, Mt States Reg Hemophilia & Thrombosis Ctr, Aurora, CO USA
[5] Childrens Hosp, Aurora, CO USA
[6] Hosp Pediat Prof Dr JP Garrahan, Serv Hematol & Oncol, Buenos Aires, DF, Argentina
[7] Hosp Sick Children, Toronto, ON M5G 1X8, Canada
[8] Ctr Hosp Univ, Unit Neonatol & Reanimat Pediat, St Etienne, France
[9] McMaster Univ, Hamilton, ON, Canada
[10] Univ Calif San Francisco, San Francisco, CA 94143 USA
[11] UCSF Childrens Hosp, San Francisco, CA USA
[12] UCL, Neurosci Unit 11, Inst Child Hlth, London, England
[13] Univ Colorado Denver, Pediat & Mt States Reg Hemophilia & Thrombosis Ct, Aurora, CO USA
[14] Indiana Univ, Sch Med, Indianapolis, IN USA
[15] Massachusetts Gen Hosp, Boston, MA 02114 USA
[16] Harvard Univ, Sch Med, Boston, MA USA
[17] Univ Hosp Frankfurt, Frankfurt, Germany
[18] Charite, Berlin, Germany
[19] Univ Perugia, I-06100 Perugia, Italy
[20] Childrens Med Ctr Dallas, Dept Pediat 17, Dallas, TX USA
[21] Chaim Sheba Med Ctr, Thrombosis Unit, IL-52621 Tel Hashomer, Israel
[22] Dr V Hauners Childrens Univ Hosp, Pediat Hemophilia Ctr, Munich, Germany
[23] Natl Inst Neurol Disorders & Stroke, Div Stroke Diagnost & Therapeut 21, Bethesda, MD USA
[24] Med Univ Vienna, Dept Pediat, Vienna, Austria
[25] Univ Munster, Dept Internal Med, D-4400 Munster, Germany
[26] Univ Melbourne, Dept Paediat, Parkville, Vic 3052, Australia
[27] Emma Childrens Hosp AMC, Dept Pediat Hematol 25, Amsterdam, Netherlands
[28] Childrens Hosp Philadelphia, Dept Pediat, Div Hematol 27, Philadelphia, PA 19104 USA
[29] Univ Padua, Sch Med, Padua, Italy
[30] Childrens Hosp Los Angeles, Los Angeles, CA 90027 USA
[31] Univ Childrens Hosp, Dept Pediat Hem Onc, Munster, Germany