Sun, Zengmei
Qi, Yanqiu
Article History
Received: 7 February 2022
Accepted: 18 March 2022
First Online: 18 April 2022
Declarations
:
: The study was approved by the Ethics Committee of Weifang People's Hospital, and informed consent was obtained from each participant.
: Not applicable.
: The authors declare no conflict of interest.