Anesthesiology, 1967.
D000770:Anesthesia, Endotracheal; D000768:Anesthesia, General; D004724:Endoscopy; D004945:Esophagoscopy; D006801:Humans; D007442:Intubation, Intratracheal; D007828:Laryngoscopy; D010038:Otorhinolaryngologic Diseases / Q000601:surgery*