title: The effect of lithium on the "on-off" phenomenon in parkinsonism.
mesh_terms: D000328:Adult; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D007980:Levodopa / Q000009:adverse effects*; D008094:Lithium / Q000008:administration & dosage / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D009069:Movement Disorders / Q000139:chemically induced / Q000188:drug therapy; D010300:Parkinson Disease / Q000188:drug therapy*; D011897:Random Allocation
chemical_list: D007980:Levodopa; D008094:Lithium