1Departments of Pediatric Hematology and Oncology, Dana–Farber Cancer Institute and Children's Hospital, Boston, Harvard Medical School, Boston
2Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, Harvard Medical School, Boston
3Radiation Oncology, Massachusetts General Hospital, Boston, Harvard Medical School, Boston
4Pediatrics, Harvard Medical School, Boston
5Pediatrics, King Khalid National Hospital, Jeddah, Saudi Arabia
6Mayo Clinic, Rochester, Minn.
7Orthopedic Surgery, Children's Hospital, Boston
8Orthopedic Surgery, Harvard Medical School, Boston
9Pathology, Children's Hospital of Pittsburgh, Pittsburgh
10Pathology, Johns Hopkins Hospital, Baltimore
11Memorial Sloan-Kettering Cancer Center, New York
12Radiation Oncology, Harvard Medical School, Boston
13Keck School of Medicine, University of Southern California, and Radiology, Children's Hospital of Los Angeles — both in Los Angeles
14Pediatrics, New York University Medical Center, New York
15Division of Pediatric Hematology and Oncology, Washington University Medical Center, and Pediatrics, Washington University School of Medicine, St. Louis
16Pediatrics, City of Hope National Medical Center, Duarte, Calif.