Opioids in labour.
Liston
W A
WA
D015360:Analgesia, Epidural; D016362:Analgesia, Obstetrical / Q000379:methods*; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D005260:Female; D003932:Heroin / Q000008:administration & dosage; D006801:Humans; D007743:Labor, Obstetric; D008614:Meperidine / Q000008:administration & dosage; D011247:Pregnancy
D000701:Analgesics, Opioid; D003932:Heroin; D008614:Meperidine