Funding for this research was provided by:
National Natural Science Foundation of China (81870661, 81470623)
Text and Data Mining valid from 2019-07-08
Received: 9 April 2019
Accepted: 13 June 2019
First Online: 8 July 2019
Ethics approval and consent to participate
: The study was approved by the Human Research Ethics Committee of the Eye and ENT Hospital of Fudan University and adhered to the tenets of the Declaration of Helsinki. Written informed consent was obtained from each subject.
: Not applicable.
: The authors declare that they no competing interests.