title: Control of nitrous oxide during cryosurgery.
mesh_terms: D000395:Air Pollutants, Occupational; D003452:Cryosurgery / Q000295:instrumentation*; D004869:Equipment Safety; D006801:Humans; D009314:National Institute for Occupational Safety and Health, U.S. / Q000592:standards; D009609:Nitrous Oxide; D017751:Safety Management; D014481:United States; D014691:Ventilation
chemical_list: D000395:Air Pollutants, Occupational; D009609:Nitrous Oxide