title: Effects of concentration of local anaesthetic drugs in extradural block.
mesh_terms: D000767:Anesthesia, Epidural; D000779:Anesthetics, Local / Q000008:administration & dosage*; D004837:Epinephrine / Q000008:administration & dosage; D005260:Female; D006801:Humans
chemical_list: D000779:Anesthetics, Local; D004837:Epinephrine