title: Internal medicine: at the nexus of the health care system in responding to the demographic imperative of an aging population.
authors.forename: W R
authors.initials: WR
authors.lastname: Hazzard
authors.forename: N
authors.initials: N
authors.lastname: Woolard
authors.forename: D I
authors.initials: DI
authors.lastname: Regenstreif
mesh_terms: D000368:Aged; D003695:Delivery of Health Care / Q000639:trends*; D003710:Demography; D005260:Female; D005853:Geriatrics / Q000639:trends*; D006801:Humans; D007388:Internal Medicine / Q000639:trends*; D008297:Male; D014481:United States