Luo, Jingjing
Zhao, Dan
Gao, Tingting
Sun, Jingjie
Li, Peilong
Wang, Xuehong
Wang, Xueqing
Chai, Shujun
Li, Jiayan
Zhou, Chengchao
Funding for this research was provided by:
National Natural Science Foundation of China (72274109)
Article History
Received: 7 April 2023
Accepted: 11 October 2023
First Online: 28 October 2023
Declarations
:
: The authors declare no competing interests.
: This study protoco was approved and organized by Health Commission of Shandong Province. This study was reviewed and approved by the Institutional Review Board (Academic Research Ethics Committee) of Shandong University School of Public Health. All procedures were in accordance with the ethical standards of the Helsinki Declaration. Written informed consent has been obtained from all participants, legal guardian(s) of the illiterate people.
: Not applicable.