Effect of ultrasound-guided internal branch of superior laryngeal nerve block on postoperative sore throat induced by a NIM-EMG-ETT: study protocol for a double-blinded randomized... by Xi Liu, Aizhong Wang, Zhihua Jiao, Jun Yao, Xiaoxiao Chen, Limin Luo, Hui Zhang

Subjects: “…Ultrasound-guided internal branch of superior laryngeal nerve block…”
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