Linking Policy

Links to individual pages within the Web site are permissible, provided attribution is made to and any descriptive notes accurately reflect the content of the linked page(s).

Some pages on may contain links to external Web sites. These links are provided for convenience and informational purposes. In general, it is the policy of to link only to federal government Web sites and to the Web sites of NCI partners whose content meets acceptable standards of quality and also supplements or enhances existing content on

An NCI partner is defined as any entity (e.g., cancer center, clinical trial cooperative group) with which NCI has a standing relationship (e.g., grant, memorandum of understanding, license, cooperative research, and development agreement). National Cancer Institute Centers for Disease Control and Prevention National Institutes of Health Department of Health and Human Services