title: Pneumonia in the elderly: understanding the characteristics.
authors.forename: Jun
authors.initials: J
authors.lastname: Shu
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005853:Geriatrics / Q000639:trends*; D006801:Humans; D011014:Pneumonia / Q000175:diagnosis / Q000401:mortality / Q000503:physiopathology*; D012720:Severity of Illness Index