Department of Otolaryngology Head and Neck Surgery, The Second Hospital of Jilin University, Changchun, Jilin, China

Address correspondence and reprint requests to Xue Zhao, MD, Department of Otolaryngology Head and Neck Surgery, The Second Hospital of Jilin University, ZiQiang Street 218, Changchun, Jilin 130041, China; E-mail: [email protected]

This article has been authorized by the parents of the child and approved by the Ethics Committee of The Second Hospital of Jilin University.

The authors report no conflicts of interest.

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