Published on in Vol 21 , No 11 (2019) :November

1 Department of Epidemiology and Biostatistics , School of Public Health , Sun Yat-sen University , Guangzhou , CN
2 Sun Yat-sen Center for Migrant Health Policy , Guangzhou , CN
3 Sun Yat-sen Center for Global Health , Institute of State Governance , Guangzhou , CN
4 Department of Health Administration and Policy , College of Health and Human Services , George Mason University , Fairfax , VA , US
5 South Carolina SmartState Center for Healthcare Quality , Arnold School of Public Health , University of South Carolina , Columbia , SC , US
6 Department of Health Promotion , Education, and Behavior, Arnold School of Public Health , University of South Carolina , Columbia , SC , US
7 National Center of AIDS/STD Control and Prevention , Chinese Center for Disease Control and Prevention , Beijing , CN
8 Department of Infectious Diseases , Eight People’s Hospital , Guangzhou , CN
*these authors contributed equally