Children's Oncology Group, Arcadia, California, United States
North Central Cancer Treatment Group, Rochester, Minnesota, United States
M D Anderson Cancer Center, Houston, Texas, United States
Gynecologic Oncology Group, Philadelphia, Pennsylvania, United States
University of Pennsylvania/Abramson Cancer Center, Philadelphia, Pennsylvania, United States
Hackensack University Medical Center, Hackensack, New Jersey, United States
University of Vermont and State Agricultural College, Burlington, Vermont, United States
Gynecologic Oncology Group, Philadelphia, Pennsylvania, United States
Radiation Therapy Oncology Group, Philadelphia, Pennsylvania, United States
University of Chicago Comprehensive Cancer Center, Chicago, Illinois, United States
University of Nebraska Medical Center, Omaha, Nebraska, United States
Mayo Clinic, Rochester, Minnesota, United States