Lurie Children's Hospital of Chicago, Lurie Children's Hospital of Chicago, Harvard University - Dana-Farber Cancer Institute, The Hospital for Sick Children - Division of Hematology/Oncology, University of Alabama at Birmingham - Institute for Cancer Outcomes and Survivorship, Children’s Hospital of Philadelphia, St. Jude Children’s Research Hospital, University of Calgary, St. Jude Children’s Research Hospital, City of Hope - Department of Population Sciences, The Children's Oncology Group (COG) Statistics and Data Center (SDC) - Department of Biostatistics, Harvard University - Dana-Farber Cancer Institute, University of Southern California - Children’s Hospital Los Angeles, University of Pennsylvania - Division of Oncology, Harvard University - Dana-Farber Cancer Institute and Harvard University - Dana-Farber Cancer Institute

University of Alberta - School of Public Health, University of Minnesota - Twin Cities, Children's Hospital of Philadelphia - Department of Pediatrics, St. Jude Children’s Research Hospital - Department of Epidemiology and Cancer Control, University of Alberta - School of Public Health, St. Jude Children’s Research Hospital - Department of Epidemiology and Cancer Control, St. Jude Children’s Research Hospital - Department of Epidemiology and Cancer Control, St. Jude Children’s Research Hospital - Department of Epidemiology and Cancer Control, Fred Hutchinson Cancer Research Center - Public Health Sciences Division, University of Texas at Houston - MD Anderson Cancer Center, University of Alabama at Birmingham - Institute for Cancer Outcomes and Survivorship, St. Jude Children’s Research Hospital - Department of Epidemiology and Cancer Control, St. Jude Children’s Research Hospital - Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital - Department of Epidemiology, The Hospital for Sick Children - Division of Hematology/Oncology and University of Alberta - School of Public Health

University of Toronto - The Hospital for Sick Children - SickKids, University of Toronto - The Hospital for Sick Children - SickKids, McGill University - McGill University Health Centre, University of Toronto - The Hospital for Sick Children - SickKids, McGill University - McGill University Health Centre, The Hospital for Sick Children - Division of Hematology/Oncology, University of Waterloo, The Hospital for Sick Children - Division of Hematology/Oncology, McGill University - McGill University Health Centre and University of Toronto - The Hospital for Sick Children - SickKids