title: Letter: Long term mental changes in levodopa-treated patients.
mesh_terms: D004295:Dihydroxyphenylalanine / Q000009:adverse effects* / Q000494:pharmacology / Q000627:therapeutic use; D005500:Follow-Up Studies; D006801:Humans; D007361:Intelligence Tests; D001523:Mental Disorders / Q000139:chemically induced*; D008606:Mental Processes / Q000187:drug effects*; D010300:Parkinson Disease / Q000188:drug therapy*; D010468:Perceptual Disorders / Q000139:chemically induced; D013647:Task Performance and Analysis; D013997:Time Factors
chemical_list: D004295:Dihydroxyphenylalanine