Gruppi collaborativi
- EORTC, European Organization for Research and Treatment of Cancer
- ECOG, The Eastern Cooperative Oncology Group
- SWOG, Southwest Oncology Group
- RTOG, Radiation Therapy Oncology Group
- CRC, Cancer Reseaech Compaign
- MRC, Medical Research Council
- NSABP, National Surgical Adjuvant Breast and Bowel Project
- NCCTG, North Cancer Treatment Group
- NCIC CTG, National Cancer Institute of Canada Clinical Trials Group
- GOC, Gynecologic Oncology Group