Zhao, Ji-ping
Liu, Xue-jun
Lin, Hao-zhi
Cui, Chun-xiao
Yue, Ying-jie
Gao, Song
Xu, Hong-zhang
Article History
Received: 23 March 2022
Accepted: 13 December 2022
First Online: 22 December 2022
Declarations
:
: 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. Ethics Committee of Affiliated Hospital of Qingdao University approved the study and waived the need of informed consent.
: Not applicable.
: The authors declare that they have no conflict of interest.