title: The origin, evolution, and principles of patient navigation.
authors.affiliation: Columbia University College of Physicians and Surgeons.
authors.forename: Harold P
authors.initials: HP
authors.lastname: Freeman
mesh_terms: D003695:Delivery of Health Care; D049673:History, 20th Century; D006801:Humans; D007348:Insurance, Health; D009369:Neoplasms / Q000175:diagnosis / Q000517:prevention & control / Q000628:therapy; D062526:Patient Navigation / Q000191:economics / Q000266:history; D012109:Research Support as Topic