Hospitals fined for nitrous oxide concentrations.
D000777:Anesthetics / Q000009:adverse effects; D004781:Environmental Exposure; D005161:Facility Regulation and Control; D006761:Hospitals; D006801:Humans; D009609:Nitrous Oxide / Q000009:adverse effects*; D014481:United States; D014691:Ventilation
D000777:Anesthetics; D009609:Nitrous Oxide