title: Letter: Nitrazepam and diazepam.
mesh_terms: D003975:Diazepam / Q000627:therapeutic use*; D004363:Drug Utilization; D004470:Economics, Medical; D006801:Humans; D009567:Nitrazepam / Q000627:therapeutic use*
chemical_list: D009567:Nitrazepam; D003975:Diazepam