title: Underestimation of disability occurrence in epidemiological studies of older people: is research on disability still alive?
authors.forename: Jack M
authors.initials: JM
authors.lastname: Guralnik
authors.forename: Luigi
authors.initials: L
authors.lastname: Ferrucci
mesh_terms: D000368:Aged; D006233:Persons with Disabilities / Q000706:statistics & numerical data*; D004812:Epidemiologic Methods; D006801:Humans