title: Editorial: "There shall be no pain".
mesh_terms: D000766:Anesthesia, Dental / Q000266:history; D000776:Anesthesiology / Q000266:history*; D049672:History, 19th Century; D006801:Humans; D009609:Nitrous Oxide; D014481:United States
chemical_list: D009609:Nitrous Oxide