title: Environmental and genetic factors in the etiology of Parkinson's disease.
mesh_terms: D003430:Cross-Sectional Studies; D006801:Humans; D007980:Levodopa / Q000627:therapeutic use; D010300:Parkinson Disease / Q000235:genetics* / Q000401:mortality; D010375:Pedigree; D011792:Quebec; D012306:Risk; D012424:Rural Population; D012931:Social Environment; D014505:Urban Population
chemical_list: D007980:Levodopa