Funding for this research was provided by:
Humanities and Social Studies Program of Ministry of Education (20YJC840004)
Jiangsu Provincial Higher Education Reform Research Project Key Project (2021JSJG053)
Nanjing University of Chinese Medicine ‘Jiangsu University nursing advantage discipline construction project’ funding (2019YSHL075)
Received: 29 March 2022
Accepted: 14 July 2022
First Online: 23 July 2022
: All respondents gave informed written consent before they were interviewed, and ethical approval for collecting data on human subjects was obtained and renewed annually at the Peking University Institutional Review Board (IRB00001052–11015). There is no need for additional ethics approval for the approved data users. All methods in this study were performed in accordance with the guidelines of the Declaration of Helsinki.
: Not applicable.
: The authors report no conflicts of interest in this work.