title: Value of plasma-dopa determinations in the management of Parkinson's disease.
mesh_terms: D000368:Aged; D004295:Dihydroxyphenylalanine / Q000097:blood* / Q000627:therapeutic use; D006801:Humans; D008297:Male; D008722:Methods; D010300:Parkinson Disease / Q000188:drug therapy*; D013997:Time Factors
chemical_list: D004295:Dihydroxyphenylalanine