Depression in old age: questions concerning prevalence studies.
Snowdon
J
J
D000368:Aged; D001315:Australia / Q000453:epidemiology; D003430:Cross-Sectional Studies; D003704:Dementia / Q000453:epidemiology*; D003866:Depressive Disorder / Q000453:epidemiology*; D006285:Health Planning; D006801:Humans; D015994:Incidence