title: Pneumonia in the elderly: whose friend is it anyway?
authors.forename: Muthiah P
authors.initials: MP
authors.lastname: Muthiah
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017714:Community-Acquired Infections / Q000453:epidemiology; D005853:Geriatrics / Q000639:trends*; D006801:Humans; D018410:Pneumonia, Bacterial / Q000145:classification / Q000453:epidemiology* / Q000401:mortality; D012720:Severity of Illness Index; D014481:United States / Q000453:epidemiology