1. Shandong University; Center for Health Management and Policy, Key Lab for Health Economics and Policy Research, Ministry of Health; Jinan Shandong China 250012
2. Ministry of Health; Key Lab for Health Economics and Policy Research; Shandong China
3. Peking University; China Center for Health Development Studies (CCHDS); 38 Xueyuan Road Beijing Beijing China 100191
4. Shandong University; Center for Health Management and Policy; Jinan China
5. Liverpool School of Tropical Medicine; Department of Clinical Sciences; Pembroke Place Liverpool Merseyside UK L3 5QA