Nitrous oxide sedation--not a "laughing" matter.
Mueller
A P
AP
D000766:Anesthesia, Dental; D000768:Anesthesia, General; D005239:Fear; D006801:Humans; D009609:Nitrous Oxide / Q000008:administration & dosage*; D019966:Substance-Related Disorders
D009609:Nitrous Oxide