- Correspondence to Dr Xun Xu, Shanghai General Hospital Department of Ophthalmology (aka National Clinical Research Center for Eye Diseases), Shanghai, China;
- Received January 7, 2021
- Revised March 31, 2021
- Accepted April 13, 2021
- First published May 17, 2021.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.