Published on in Vol 7, No 4 (2019): April
1 Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
2 Department of Psychology, University of Alabama at Tuscaloosa, Tuscaloosa, AL, United States
3 Department of Biostatistics, College of Public Health and Health Professions, Emerging Pathogen Institute, University of Florida, Gainesville, FL, United States
4 Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, China
5 Information and Network Center, Central South University, Changsha, China
*these authors contributed equally