Received: 19 March 2020
Accepted: 19 August 2020
First Online: 9 September 2020
Ethics approval and consent to participate
: The Institutional Review Board of the Eye and ENT Hospital of Fudan University, Shanghai, China, approved this study (NO.2013021). All procedures adhered to the Declaration of Helsinki and were conducted in accordance with the approved protocol. Written informed consent was obtained from each patient before his/her participation.
: Not applicable.
: The authors declare that they have no competing interests.