Wang, Wen-jing
Jia, Xiao-yu
Cui, Zhao
Chen, Yan
Wang, Wei
Lou, Jin-li
Zhao, Ming-hui
Ying, Sun http://orcid.org/0000-0003-1984-007X
Funding for this research was provided by:
Innovative Research Group Project of the National Natural Science Foundation of China (81621092)
the Outstanding Young Scholar (81622009)
other programs (81330020, 81370801, 81870482)
Article History
Received: 11 December 2019
Accepted: 2 October 2020
First Online: 8 October 2020
Ethics approval and consent to participate
: Ethical approval for the study was granted by the Ethics Committee of Beijing Youan hospital. As a result of the retrospective design of the study and local policy, the local ethics committee confirmed that the conditions for exemption from informed consent were met and that participants were not required to give informed consent.
: Not applicable.
: All of the authors read and approved the final manuscript. All of the authors declare that they have no competing interests.