1. Institute of Population and Labor Economics, Chinese Academy of Social Sciences, Beijing, China
2. Department of Health Policy and Management, School of Public Health, Peking University Health Science Center, Beijing, China
3. Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
4. Department of Family Practice, University of British Columbia, Vancouver, British Columbia, Canada
5. Center for Health Policy and Technology Evaluation, National Institute of Health Data Science at Peking University, Beijing, China