Liang, Jingjing
Chen, Fengyan
Fang, Guoqing
Zhang, Xin
Li, Yan
Ma, Bingjie
Lin, Suifang
Pan, Jialiang
Zhang, Zheqing
Funding for this research was provided by:
National Natural Science Foundation of China (81903347, 81973045)
Article History
Received: 15 January 2020
Accepted: 27 February 2020
First Online: 10 March 2020
Compliance with Ethical Standards
: All procedures used in this study were approved by the ethics committee of the School of Public Health at Sun Yat-sen University.
: The authors declare that they have no conflict of interest.