Depression and the elderly.
D000223:Adaptation, Psychological; D000368:Aged; D003863:Depression / Q000150:complications / Q000175:diagnosis / Q000628:therapy*; D005852:Geriatric Psychiatry; D006801:Humans; D006998:Hypochondriasis / Q000209:etiology; D012931:Social Environment; D013315:Stress, Psychological