Ethical Approval

DF Dan Fu
AA Aruma Aruma
YX Ye Xu
TH Tian Han
FX Fei Xia
XZ Xing-Tao Zhou
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This study was approved by the Ethics Board of the Eye, Ear, Nose and Throat Hospital (EENT) of Fudan University. All enrolled patients were informed of the benefits and drawbacks of this surgery, and written informed consent was obtained from each patient. All study procedures were conducted in accordance with the Declaration of Helsinki.

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