title: Is the cause of Parkinson's disease environmental or hereditary? Evidence from twin studies.
authors.affiliation: Parkinson's Institute, Sunnyvale, California, USA.
authors.forename: Caroline M
authors.initials: CM
authors.lastname: Tanner
mesh_terms: D004781:Environmental Exposure / Q000009:adverse effects*; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D006801:Humans; D010300:Parkinson Disease / Q000235:genetics* / Q000503:physiopathology; D012307:Risk Factors; D018433:Twin Studies as Topic / Q000706:statistics & numerical data*; D014430:Twins, Monozygotic / Q000235:genetics