From the Department of Epidemiology and Cancer Control, St Jude Children's Research Hospital, Memphis, TN; Clinical Statistics and Cancer Prevention Programs, Fred Hutchinson Cancer Research Center, Seattle, WA; Department of Radiation Physics, The University of Texas M. D. Anderson Cancer Center, Houston, TX; Department of Pediatrics, Memorial Sloan-Kettering Cancer Center, New York, NY; Department of Pediatrics, Emory University, Atlanta, GA; Department of Radiation Oncology, Stanford University... (At 2010-01-10)