Liu, Wei http://orcid.org/0000-0001-9863-4332
Cai, Jiao
Sun, Chanjuan
Zou, Zhijun
Zhang, Jialing
Huang, Chen
Funding for this research was provided by:
National Key Research and Development Program of China (2017YFC0702700)
Research start-up fund for new faculty of Chongqing university of science and Technology (182001002)
Special fund for Postdoctoral Fellow in Chongqing (13201907)
Article History
Received: 6 March 2020
Accepted: 11 June 2020
First Online: 20 June 2020
Compliance with ethical standards
: The questionnaire and proposal for the CCHH study was approved by the ethical committee from the School of Public Health, Fudan University.
: The authors declare that they have no conflict of interest.