Extradural opioids in labour.
Reynolds
F
F
D015360:Analgesia, Epidural; D000773:Anesthesia, Obstetrical; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D009294:Narcotics / Q000008:administration & dosage*; D011247:Pregnancy
D009294:Narcotics