Liu, Liang
Yu, Chunhong
Sun, Fuzhen
Yang, Tao
Wei, Dong
Wang, Gang
Li, Shoubin
Liu, Junjiang
Article History
Received: 15 February 2022
Accepted: 13 May 2022
First Online: 18 July 2022
Declarations
:
: Ethical approval was obtained from Hebei General Hospital health research ethics committee and written informed consent obtained from the participants in this study. A copy of ethical clearance certificate is available on request.
: Not applicable.
: The authors declare that they have no competing interests.