title: An appraisal of the problem of dementia in Parkinson's disease.
mesh_terms: D000368:Aged; D003704:Dementia / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D008569:Memory Disorders / Q000150:complications; D008875:Middle Aged; D010300:Parkinson Disease / Q000150:complications*