Oral analgesic studies: pentazocine hydrochloride, codeine, aspirin, and placebo and their influence on response to placebo.
D000328:Adult; D001241:Aspirin / Q000627:therapeutic use*; D003061:Codeine / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D008297:Male; D010146:Pain / Q000188:drug therapy*; D010423:Pentazocine / Q000627:therapeutic use*; D010919:Placebos
D010919:Placebos; D001241:Aspirin; D010423:Pentazocine; D003061:Codeine