Li, Yong
Chen, Zhiying
Wang, Xiang
Li, Xiumei
Zhou, Jie
Zhang, Yongchun
Article History
Received: 11 October 2020
Accepted: 5 April 2021
First Online: 21 April 2021
Declarations
:
: This study was approved by the Affiliated Hospital of Qingdao University (the Institutional Review Board). Written informed consent for publication was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.