The case against relative analgesia.
D000698:Analgesia; D000766:Anesthesia, Dental / Q000009:adverse effects; D000777:Anesthetics / Q000008:administration & dosage* / Q000009:adverse effects; D006801:Humans; D009609:Nitrous Oxide / Q000008:administration & dosage* / Q000009:adverse effects
D000777:Anesthetics; D009609:Nitrous Oxide