Superior laryngeal nerve block.
D000772:Anesthesia, Local; D001995:Bronchography; D001999:Bronchoscopy; D004945:Esophagoscopy; D006801:Humans; D007823:Laryngeal Nerves; D007828:Laryngoscopy; D008722:Methods; D012137:Respiratory System / Q000000981:diagnostic imaging