Wang, Pan
Dong, Ying
Zuo, Kun
Han, Chunming
Jiao, Jie
Yang, Xinchun
Li, Jing
Article History
Received: 30 December 2020
Accepted: 13 April 2021
First Online: 26 April 2021
Declarations
:
: This article does not contain any studies with animals performed by any of the authors. 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 study was approved by local ethics committees (Kailuan General Hospital, Beijing Chaoyang Hospital, and Beijing Fuwai Hospital) and informed consent was obtained from all subjects.
: Not applicable.
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.