Pethidine in labour.
Low
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Tordoff
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D016362:Analgesia, Obstetrical / Q000379:methods*; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D008614:Meperidine / Q000008:administration & dosage*; D008880:Midwifery; D011247:Pregnancy
D000701:Analgesics, Opioid; D008614:Meperidine