title: Epidemiology of mental health: a keystone of geriatric psychiatry.
authors.forename: Kristine
authors.initials: K
authors.lastname: Yaffe
authors.forename: David
authors.initials: D
authors.lastname: Steffens
mesh_terms: D000368:Aged; D000375:Aging / Q000523:psychology; D005852:Geriatric Psychiatry / Q000379:methods*; D006801:Humans; D001523:Mental Disorders / Q000453:epidemiology*