American Association of Physicists in Medicine
American College of Radiology (ACR)
American College of Radiology Imaging Network (ACRIN)
American Society for Therapeutic Radiology and Oncology (ASTRO)
Alpha Oncology
Coalition of Cancer Cooperative Groups
TrialCheck® : Search for clinical trials
CALGB: Cancer and Leukemia Group B
COG: Children's Oncology Group
CTSU: Clinical Trials Support Unit
ECOG: Eastern Cooperative Oncology Group
EORTC: European Organization for Research and Treatment of Cancer
GOG: Gynecologic Oncology Group
NCCTG: North Central Cancer Treatment Group
NCIC: National Cancer Institute of Canada Clinical Trials Group
NSABP: National Surgical Adjuvant Project for Breast and Bowel Cancer
QARC: Quality Assurance Review Center
Radiological Physics Center
SWOG: Southwest Oncology Group