[Autosyringe for extrapulmonary administration of gases].
D000698:Analgesia / Q000295:instrumentation*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009609:Nitrous Oxide / Q000008:administration & dosage; D010146:Pain / Q000517:prevention & control; D013594:Syringes
D009609:Nitrous Oxide
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