Xu, Wenjuan
Zhang, Xiaoyu
Chen, Huan
Zhao, Zhangning
Zhu, Meijia
Article History
Received: 3 November 2020
Accepted: 18 February 2021
First Online: 4 March 2021
Declarations
:
: The study protocol was approved by the Ethics Committee of Shandong Provincial Qianfoshan Hospital, Shandong University. Informed consent obtained from all subjects to participate in the study.
: Not applicable.
: The authors declare that they have no competing interests.