title: Epidemiological approach to Parkinson's disease.
mesh_terms: D000368:Aged; D004739:England; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D010300:Parkinson Disease / Q000145:classification / Q000453:epidemiology* / Q000209:etiology / Q000401:mortality; D010301:Parkinson Disease, Postencephalitic / Q000209:etiology; D013997:Time Factors; D014852:Wales