title: Geriatrics as a subspecialty: an update.
authors.forename: L
authors.initials: L
authors.lastname: Champlin
mesh_terms: D000368:Aged; D002568:Certification; D005194:Family Practice; D005853:Geriatrics / Q000592:standards / Q000639:trends; D006801:Humans; D007388:Internal Medicine; D014481:United States