Affiliation: | 1. Department of Epidemiology, School of Public Halth, Cheeloo College of Medicine, Shandong University, Jinan, China;2. Centre for Health Management and Policy Research, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China NHC Key Lab of Health Economics and Policy Research (Shandong University), Jinan, China |