Yu, Jie
Fan, Qiqi
Li, Lingling
Article History
Received: 9 April 2021
Accepted: 25 June 2021
First Online: 13 July 2021
Declarations
:
: Ethical approval was obtained from the Ethics Committee of Qingdao Municipal Hospital (No. 1265QMM#3233), and all the procedures have been performed in accordance with the Declaration of Helsinki. Written informed consent was signed by all participates.
: Not applicable.
: No competing interests.