title: Share with women. Nitrous oxide for pain relief in labor.
mesh_terms: D016362:Analgesia, Obstetrical; D018685:Anesthetics, Inhalation / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D009609:Nitrous Oxide / Q000627:therapeutic use*; D011247:Pregnancy
chemical_list: D018685:Anesthetics, Inhalation; D009609:Nitrous Oxide