1. Centre for Health Management and Policy Research School of Public Health Cheeloo College of Medicine Shandong University Jinan Shandong China
2. NHC Key Lab of Health Economics and Policy Research (Shandong University) Jinan Shandong China
3. School of Nursing and Rehabilitation Cheeloo College of Medicine Shandong University Jinan Shandong China
4. College of Arts and Sciences University of Virginia Charlottesville Virginia USA
5. School of Medicine Johns Hopkins University Baltimore Maryland USA