Epidural morphine.
D000767:Anesthesia, Epidural / Q000009:adverse effects*; D000773:Anesthesia, Obstetrical / Q000009:adverse effects; D005260:Female; D006801:Humans; D009020:Morphine / Q000009:adverse effects*; D011183:Postoperative Complications / Q000139:chemically induced*; D011247:Pregnancy
D009020:Morphine