title: [Psychological symptoms of frail elderly].
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Hattori
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001007:Anxiety / Q000209:etiology; D003072:Cognition Disorders / Q000209:etiology; D003863:Depression / Q000209:etiology; D016330:Frail Elderly / Q000523:psychology*; D006801:Humans; D008297:Male