title: A source of nonanesthetic nitrous oxide in operating room air.
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000395:Air Pollutants, Occupational / Q000032:analysis*; D003452:Cryosurgery / Q000295:instrumentation*; D006801:Humans; D009609:Nitrous Oxide / Q000032:analysis*; D009873:Operating Rooms
chemical_list: D000393:Air Pollutants; D000395:Air Pollutants, Occupational; D009609:Nitrous Oxide