title: Making a difference.
authors.affiliation: Dartmouth Medical School, Hanover, NH 03755-3837, USA.
authors.forename: J F
authors.initials: JF
authors.lastname: O'Donnell
mesh_terms: D006266:Health Education; D049673:History, 20th Century; D006801:Humans; D008495:Medical Oncology / Q000266:history; D009369:Neoplasms / Q000517:prevention & control*; D010686:Philosophy, Medical; D012955:Societies, Medical; D014481:United States