title: Psychiatric changes in patients treated with levodopa. I. The clinical experiment.
mesh_terms: D000368:Aged; D002986:Clinical Trials as Topic; D004295:Dihydroxyphenylalanine / Q000008:administration & dosage*; D006801:Humans; D008297:Male; D008606:Mental Processes / Q000187:drug effects*; D008875:Middle Aged; D009460:Neurologic Examination; D010300:Parkinson Disease / Q000188:drug therapy*; D011569:Psychiatric Status Rating Scales
chemical_list: D004295:Dihydroxyphenylalanine