The cancer research program at the Department of Population Medicine spans the spectrum of cancer, from cancer prevention, diagnosis, and treatment to cancer survivorship. The research portfolio includes studies of a broad variety of defined populations and a range of clinical, health services, and policy research areas using a range of innovative research methods. In addition to strong relationships with the Harvard Medical School and Harvard Pilgrim Health Care, the cancer research has active collaborations with both local and national research networks positioned at the forefront of epidemiological and health services cancer research. The Department directs the Community Practice Research Core of the Dana-Farber/Harvard Cancer Center, and through the Department's cancer research programs, researchers have access to a racially diverse population of over 10,000,000 patients within the community-based clinical practices of Harvard Vanguard Medical Associates/Atrius Health, Harvard Pilgrim Health Care and the HMO Cancer Research Network. Department faculty have ongoing affiliations with the NCI-funded Cancer Intervention and Surveillance Modeling Network (CISNET), the NCI-funded Breast Cancer Surveillance Consortium (BCSC), and have ongoing projects with the NCI directly and with United Health Plan.