Wang, Wei
Li, Weishi
Chen, Zhongqiang
Article History
Received: 31 January 2021
Accepted: 28 June 2021
First Online: 12 July 2021
Declarations
:
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This study was approved by Peking University Third Hospital Ethics Committee.
: Not applicable.
: The authors declare that they have no competing interests.