Fan, Song
Liu, Zhongquan
Luo, Zhenzhou
Yu, Maohe
Ouyang, Lin
Gong, Hui
Ding, Yi
Li, Peiyang
Yuan, Tanwei
Zhou, Yepeng
Wu, Guohui
Zou, Huachun http://orcid.org/0000-0002-8161-7576
Funding for this research was provided by:
National Natural Science Foundation of China (81703278)
Article History
Received: 28 November 2019
Accepted: 21 January 2020
First Online: 18 February 2020
Ethics approval and consent to participate
: The study has been approved by the ethics review board of School of Public Health, Sun Yat-sen University (SYSU-SPH2018044) in China. Online consent will be provided to all participants.
: Not applicable.
: The authors declare that they have no competing interests.