1. Health Services and Systems Research; Duke-NUS Medical School
2. Institute of European and American Studies; Academia Sinica
3. Center for Study of Aging and Human Development and geriatric Division
4. Department of Medicine, Medical School and Institute of Population Research and Department of Sociology; Duke University
5. China Center for Economic Research and National School of Development at Peking University in China
6. Chinese Center for Disease Control and Prevention in Beijing; China
7. Institute of Environment Health and Related Product Safety in the Chinese Center for Disease Control and Prevention; China