title: Nitrous oxide for pain in labor--why not in the United States?
authors.forename: Judith P
authors.initials: JP
authors.lastname: Rooks
mesh_terms: D000280:Administration, Inhalation; D016362:Analgesia, Obstetrical / Q000379:methods*; D016058:Analgesia, Patient-Controlled / Q000379:methods; D005060:Europe; D005260:Female; D006801:Humans; D048949:Labor Pain / Q000188:drug therapy* / Q000451:nursing; D008880:Midwifery / Q000379:methods; D009609:Nitrous Oxide / Q000627:therapeutic use*; D011247:Pregnancy; D014481:United States
chemical_list: D009609:Nitrous Oxide