[1] Olga Hosp, Klinikum Stuttgart, Stuttgart, Germany
[2] Helios Klinikum Emil Von Behring, Berlin, Germany
[3] Helios Klinikum Berlin Buch, Berlin, Germany
[4] Altonaer Kinderkrankenhaus, Hamburg, Germany
[5] Univ Klinikum Munster, Munster, Germany
[6] Klin Interdisziplinare Onkol, Bad Saarow Pieskow, Germany
[7] Oslo Univ Hosp, Oslo, Norway
[8] Norwegian Radium Hosp, Oslo, Norway
[9] Univ Coll London Hosp, London, England
[10] UCL, London WC1E 6BT, England
[11] Univ Coll Hosp, London, England
[12] Christie Hosp, Manchester, England
[13] Royal Manchester Childrens Hosp, Manchester, England
[14] Univ Leeds, Leeds, W Yorkshire, England
[15] Stanford Univ, Med Ctr, Stanford, CA 94305 USA
[16] Lucille Salter Packard Childrens Hosp, Palo Alto, CA USA
[17] Childrens Oncol Grp, Arcadia, CA USA
[18] Dana Farber Canc Inst, Boston, MA USA
[19] Childrens Hosp, Boston, MA 02115 USA
[20] Natl Med Ctr, Budapest, Hungary
[21] Childrens Hosp Philadelphia, Philadelphia, PA 19104 USA
[22] Univ Penn, Sch Med, Philadelphia, PA 19104 USA
[23] British Columbia Childrens Hosp, Vancouver, BC V6H 3V4, Canada
[24] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada
[25] Dalhousie Univ, Halifax, NS, Canada
[26] Univ Utah, Salt Lake City, UT USA
[27] Cincinnati Childrens Hosp Med Ctr, Cincinnati, OH 45229 USA
[28] H Lee Moffitt Canc Ctr & Res Inst, Tampa, FL USA
[29] Univ Spital Basel, Basel, Switzerland
[30] Univ Childrens Hosp Basel, Basel, Switzerland
[31] St Annas Children Hosp, Vienna, Austria
[32] Med Univ Vienna, Vienna, Austria
[33] Baylor Coll Med, Houston, TX 77030 USA
[34] Leiden Univ, Med Ctr, Leiden, Netherlands
[35] Radbound Univ Nijmegen, Med Ctr, Nijmegen, Netherlands
[36] Emma Childrens Hosp, Acad Med Ctr, Amsterdam, Netherlands
[37] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA
[38] Montefiore Med Ctr, Bronx, NY 10467 USA
[39] Skane Univ Hosp, Lund, Sweden
[40] Mayo Clin, Rochester, MN USA
[41] Univ Helsinki, Helsinki, Finland
[42] Hosp Dist Helsinki, Helsinki, Finland
[43] Uusimaa Lab, Helsinki, Finland
[44] Univ Hosp Leuven, Leuven, Belgium
[45] Univ Hosp, Ghent, Belgium