Han, Xinjun
Wu, Xinru
Wang, Shuhui
Xu, Lixue
Xu, Hui
Zheng, Dandan
Yu, Niange
Hong, Yanjie
Yu, Zhixuan
Yang, Dawei
Yang, Zhenghan http://orcid.org/0000-0003-3986-1732
Funding for this research was provided by:
National Natural Science Foundation of China (62171298, 61871276, 82071876)
Beijing Municipal Health Commission, Special Program of Scientific Research on health development in Beijing (grants shoufa 2018-2-2023)
Article History
Received: 29 October 2021
Accepted: 24 January 2022
First Online: 24 February 2022
Declarations
:
: The study was approved by local ethical committee and written informed consent was waived due to the retrospective nature of the study.
: The selected pictures of sample cases have personal consent form of each patient.
: The authors declare that they have no competing interests.