1. School of Public Health and Emergency Management, Southern University of Science and Technology, Shenzhen 518055, China
2. School of Public Policy and Administration, Xi’an Jiaotong University, Xi’an 710049, China
3. Vanke School of Public Health, Tsinghua University, Haidian District, Beijing 100084, China
4. Freeman Spogli Institute for International Studies, Stanford University, Stanford, CA 94305, USA