title: Four up, one back--and no-one off.
authors.affiliation: The Lancet, London NW1 7BY, UK.
authors.forename: David
authors.initials: D
authors.lastname: Sharp
mesh_terms: D000058:Accidental Falls / Q000517:prevention & control*; D000061:Accidents, Home / Q000517:prevention & control*; D006801:Humans; D012449:Safety