1. School of Public Health, Peking University, Beijing, China
2. China Center for Health Development Studies, Peking University, Beijing, China
3. Joseph J. Zilber College of Public Health, University of Wisconsin – Milwaukee, Milwaukee, Wisconsin USA
4. Matheson Center for Health Care Studies, University of Utah, Salt Lake City, Utah, USA
5. Department of Population Health Sciences, University of Utah, Salt Lake City, Utah, USA
6. Department of Economics, University of Utah, Salt Lake City, Utah, USA
7. Department of Research Patient Care Service, Stanford Health Care, Palo Alto, California, USA
8. Edward J. Bloustein School of Planning and Public Policy, Rutgers University, New Brunswick, New Jersey, USA
9. School of Public and International Affairs, Princeton University, Princeton, New Jersey, USA