title: Start hesitation--a side effect of long-term levodopa therapy.
mesh_terms: D000368:Aged; D004295:Dihydroxyphenylalanine / Q000008:administration & dosage / Q000009:adverse effects* / Q000627:therapeutic use; D005260:Female; D006801:Humans; D008124:Locomotion; D008297:Male; D008875:Middle Aged; D009069:Movement Disorders / Q000139:chemically induced*; D010300:Parkinson Disease / Q000150:complications / Q000188:drug therapy; D011605:Psychoses, Substance-Induced / Q000209:etiology; D013997:Time Factors
chemical_list: D004295:Dihydroxyphenylalanine