1. Center for Health Management and Policy Research, School of Public Health, Cheeloo College of Medicine Shandong University, Jinan, Shandong, China
2. NHC Key Laboratory of Health Economics and Policy Research (Shandong University), Jinan, Shandong, China
3. Jinan Center for Disease Control and Prevention, Jinan, China
4. Department of Current Situation and Policy, Shandong Women’s University Jinan Shandong, Jinan, China