Diazepam or nitrazepam? A question of cost.
D003362:Cost-Benefit Analysis; D003365:Costs and Cost Analysis; D003975:Diazepam / Q000627:therapeutic use*; D006801:Humans; D009567:Nitrazepam / Q000627:therapeutic use*; D012107:Research Design; D012890:Sleep / Q000187:drug effects; D013223:Statistics as Topic
D009567:Nitrazepam; D003975:Diazepam