title: Letter: Sedation for local analgesia.
mesh_terms: D000772:Anesthesia, Local; D003975:Diazepam; D006993:Hypnotics and Sedatives; D011398:Promethazine; D013997:Time Factors
chemical_list: D006993:Hypnotics and Sedatives; D011398:Promethazine; D003975:Diazepam