Ren, Yan
Du, Shufang
Zheng, Dongping
Shi, Yanyun
Pan, Luping
Yan, Hua
Article History
Received: 29 March 2021
Accepted: 27 May 2021
First Online: 4 June 2021
Declarations
:
: This retrospective cohort study was in accordance with the tenets of the Helsinki Declaration and was approved by the Shanxi Eye Hospital Ethics Committee. Written informed consent was obtained from all participants for their clinical records to be used in this study.
: Not applicable.
: The authors declare no conflict of interest.