title: Frailty and its definition: a worthy challenge.
authors.forename: Kenneth
authors.initials: K
authors.lastname: Rockwood
mesh_terms: D000368:Aged; D016330:Frail Elderly; D005853:Geriatrics / Q000379:methods* / Q000592:standards; D006801:Humans; D009765:Obesity / Q000145:classification; D009626:Terminology as Topic; D019282:Wasting Syndrome / Q000145:classification