title: [Closed or low flow technic in nitrous oxide anesthesia].
mesh_terms: D000328:Adult; D000368:Aged; D000769:Anesthesia, Inhalation / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009609:Nitrous Oxide
chemical_list: D009609:Nitrous Oxide