title: Hypnotic effect of methaqualone employing placebo responder elimination.
mesh_terms: D000328:Adult; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D008297:Male; D008702:Methaqualone / Q000494:pharmacology*; D010424:Pentobarbital / Q000494:pharmacology; D010919:Placebos; D007319:Sleep Initiation and Maintenance Disorders / Q000188:drug therapy
chemical_list: D010919:Placebos; D008702:Methaqualone; D010424:Pentobarbital