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ORIGINAL RESEARCH

Clinical Application of Ultrasound-Guided Internal Branch of Superior Laryngeal Nerve Block in Patients with Severe COPD Undergoing Awake Fibreoptic Nasotracheal Intubation: A Randomized Controlled Clinical Trial

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Pages 521-532 | Received 01 Dec 2022, Accepted 27 Mar 2023, Published online: 06 Apr 2023