title: Introduction: Cancer chemoprevention and its context.
authors.affiliation: National Cancer Institute, Division of Cancer Prevention, Chemopreventive Agent Development Research Group. Electronic address: dunnb@mail.nih.gov.
authors.forename: Barbara K
authors.initials: BK
authors.lastname: Dunn
authors.affiliation: National Cancer Institute, Division of Cancer Prevention, Gastrointestinal and Other Cancers Research Group.
authors.forename: Asad
authors.initials: A
authors.lastname: Umar
authors.affiliation: National Cancer Institute, Division of Cancer Prevention, Gastrointestinal and Other Cancers Research Group.
authors.forename: Ellen
authors.initials: E
authors.lastname: Richmond
mesh_terms: D016588:Anticarcinogenic Agents / Q000627:therapeutic use*; D018890:Chemoprevention; D006801:Humans; D009369:Neoplasms / Q000517:prevention & control*; D011322:Primary Prevention
chemical_list: D016588:Anticarcinogenic Agents