1. Centre for Health Management and Policy, School of Public Health, Cheeloo College of Medicine, Shandong University , Jinan , China
2. NHC Key Lab of Health Economics and Policy Research, Shandong University , Jinan , China
3. Shandong Health Commission Medical Management Service Center , Jinan , China
4. Institute of Health and Elderly Care, Shandong University , Jinan , China