Funding for this research was provided by:
Young Scientists Fund (61108050)
Article History
Received: 10 March 2019
Accepted: 25 June 2019
First Online: 17 July 2019
Ethics approval and consent to participate
: This study followed the tenets of the Declaration of Helsinki and was approved by the ethics committee of the EENT Hospital of Fudan University. Written informed consents were obtained from all subjects.
: Not applicable.
: The authors declare that they have no competing interests.