title: [Joint study on oral preanesthetic medication by various institutions--a comparative study of nitrazepam, diazepam and a placebo by a double-blind method].
mesh_terms: D000293:Adolescent; D002986:Clinical Trials as Topic; D003975:Diazepam; D005260:Female; D006801:Humans; D008297:Male; D009567:Nitrazepam; D010919:Placebos; D011229:Preanesthetic Medication
chemical_list: D010919:Placebos; D009567:Nitrazepam; D003975:Diazepam