title: Some recent trends in R.A.
mesh_terms: D000766:Anesthesia, Dental / Q000295:instrumentation / Q000379:methods*; D000768:Anesthesia, General / Q000295:instrumentation; D001297:Audioanalgesia / Q000379:methods*; D006801:Humans; D009609:Nitrous Oxide / Q000008:administration & dosage / Q000009:adverse effects
chemical_list: D009609:Nitrous Oxide