1. School of Public Health, SUN Yat-sen University, No. 74, Zhongshan 2nd Road, Yuexiu District, Guangzhou 510080, China.
2. Shenzhen Luohu Hospital Group, Shenzhen, China.
3. Centre for the Business and Economics of Health, University of Queensland, Brisbane, Australia.
4. Department of Health Services Research, Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, Netherlands.
5. China National Health Development Research Centre, Beijing, China.