Jiao, Kedi
Li, Haochu
Zhang, Dapeng
Jiang, Zhenxia
Lin, Yuxi
Liu, Xueyuan
Xu, Hengmin
Yan, Xuemei
Tang, Haoqing
Funding for this research was provided by:
National Key Research and Development Program (2017YFE0103800)
National Major Science and Technology Projects of China (2018ZX10721102-003-004)
Article History
Received: 20 October 2020
Accepted: 29 January 2022
First Online: 14 February 2022
Declarations
:
: This study was performed in line with the principles of the Declaration of Helsinki. The written informed consents were provided for all participants before in-depth interviews and questionnaire surveys. This study was approved by the Ethical Review Committee of School of Public Health in Shandong University (20180904).
: Not applicable.
: The authors declare that they have no competing interests.