| Name | Class |
|---|---|
| National Cancer Institute NCI | NIH |
| North Central Cancer Treatment Group | NETWORK |
| American College of Surgeons | OTHER |
| Eastern Cooperative Oncology Group | NETWORK |
| Radiation Therapy Oncology Group | NETWORK |
| Cancer and Leukemia Group B | NETWORK |
| NCIC Clinical Trials Group | NETWORK |
| NSABP Foundation Inc | NETWORK |