Zhao, Cunyue
Yu, Mingguang
Wang, Aijun
Xu, Xiaofen
Zheng, Xing
Funding for this research was provided by:
Teaching Reform Research Project of Shandong University (2022Y210)
Article History
Received: 31 October 2022
Accepted: 9 March 2023
First Online: 22 March 2023
Declarations
:
: The study was reviewed by the Ethics Committee of Shandong University Qilu Hospital, ethics review number KYLL−202011−137−1. All methods of the study were carried out in accordance with the principles of the Helsinki Declaration. Written informed consent was obtained from all subjects before participating in the survey.
: Not applicable.
: All authors have no competing interests.