Sun, Yue
Sun, Jing
Zhao, Yan
Cheng, Aixiao
Zhou, Junhong
Article History
Received: 2 December 2020
Accepted: 30 August 2021
First Online: 5 September 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. The research was approved by the Institutional Ethics Review Board of Peking University Health Science Center (IRB00001052-19149). Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.