[1] Univ Med Ctr Utrecht, Utrecht, Netherlands
[2] Univ Hlth Network, Toronto, ON, Canada
[3] Cent Penn Clin Special Children & Adults, Belleville, PA USA
[4] Lancaster Gen Hosp, Lancaster, PA USA
[5] Fdn IRCCS Ca Granda Osped Maggiore Policlin, UOC Ematol, Milan, Italy
[6] Tech Univ, Schwerpunktpraxis Padiat Hamatol Onkol & Children, Munich, Germany
[7] Stanford Univ, Dept Pediat, Sch Med, Stanford, CA 94305 USA
[8] Univ Utah, Primary Childrens Hosp, Salt Lake City, UT USA
[9] Emory Univ, Sch Med, Aflac Canc & Blood Disorders Ctr, Childrens Healthcare Atlanta, Atlanta, GA USA
[10] Klinikum Kassel GmbH, Kassel, Germany
[11] Texas Childrens Hosp, Baylor Coll Med, Houston, TX 77030 USA
[12] Palacky Univ, Olomouc, Czech Republic
[13] Univ Hosp Olomouc, Olomouc, Czech Republic
[14] Phoenix Childrens Hosp, Phoenix, AZ USA
[15] Childrens Hosp Philadelphia, Div Hematol, Philadelphia, PA 19104 USA
[16] Univ Montreal, CHU St Justine, Montreal, PQ, Canada
[17] Ann & Robert H Lurie Childrens Hosp Chicago, Chicago, IL 60611 USA
[18] St Jude Childrens Res Hosp, 332 N Lauderdale St, Memphis, TN 38105 USA
[19] Univ Freiburg, Div Pediat Hematol & Oncol, Freiburg, Germany
[20] Univ Massachusetts, Sch Med, Worcester, MA USA
[21] Wayne State Univ, Sch Med, Childrens Hosp Michigan, Detroit, MI USA
[22] Duke Univ, Med Ctr, Durham, NC USA
[23] DDC Clin Special Needs Children, Middlefield, OH USA
[24] Charite Hosp, Berlin, Germany
[25] McMaster Univ, Hamilton, ON, Canada
[26] Zentrum Kinder & Jugendmed, Heidelberg, Germany
[27] New York Presbyterian Hosp, Weill Cornell Med Coll, New York, NY USA
[28] Childrens Mercy Hosp, Kansas City, MO 64108 USA
[29] Ohio State Univ, Coll Med, Nationwide Childrens Hosp, Columbus, OH 43210 USA
[30] Univ Vermont, Childrens Hosp, Burlington, VT USA
[31] Univ Mississippi, Med Ctr, Jackson, MS 39216 USA
[32] Dana Farber Boston Childrens Canc & Blood Disorde, Boston, MA USA
[33] Boston Childrens Hosp, Inst Ctr Clin & Translat Studies, Boston, MA USA
[34] Harvard Med Sch, Dana Farber Boston Childrens Canc & Blood Disorde, Boston, MA USA