the official website of The Oncology Group, specialists in cancer information since 1981, and the companion website for the journal ONCOLOGY and Oncology News International.

The National Cancer Institute (NCI) is a component of the National Institutes of Health (NIH), one of eight agencies that compose the Public Health Service (PHS) in the Department of Health and Human Services (DHHS). The NCI, established under the National Cancer Institute Act of 1937, is the Federal Government's principal agency for cancer research and training.

The American Cancer Society (ACS) is a nationwide, community-based voluntary health organization. Headquartered in Atlanta, Georgia, the ACS has state divisions and more than 3,400 local offices.