Wang, Hui
Wang, Longjie
Sun, Zhuoran
Jiang, Shuai
Li, Weishi
Article History
Received: 11 August 2020
Accepted: 6 October 2020
First Online: 20 October 2020
Ethics approval and consent to participate
: 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. For this type of study, the informed consent was waived. This study was approved by Peking University Third Hospital Ethics Committee.
: Not applicable
: The authors declare that they have no competing interests.