title: Comparison of epidural and intramuscular pethidine for analgesia in labour.
mesh_terms: D000765:Anesthesia, Conduction / Q000379:methods*; D000767:Anesthesia, Epidural; D000773:Anesthesia, Obstetrical / Q000379:methods*; D005260:Female; D006801:Humans; D007273:Injections, Intramuscular; D008614:Meperidine / Q000008:administration & dosage* / Q000097:blood; D011247:Pregnancy
chemical_list: D008614:Meperidine