1. From the Children's Hospital Boston; Harvard Medical School; Brigham and Women's Hospital; and Dana-Farber Cancer Institute, Boston; and Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA; Johns Hopkins University Medical Center, Baltimore, MD; Texas Children's Cancer Center, Baylor College of Medicine, Houston, TX; Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA; St Jude Children's Research Hospital, Memphis, TN; Laboratoire de Génétique et...