title: Letter: Patient controlled intravenous narcotic administration during labour.
mesh_terms: D000771:Anesthesia, Intravenous; D000773:Anesthesia, Obstetrical; D002653:Child Behavior Disorders / Q000139:chemically induced; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008614:Meperidine / Q000009:adverse effects*; D009034:Mother-Child Relations; D011247:Pregnancy
chemical_list: D008614:Meperidine