1
School of Economics and Management, Northwest University, Xi’an 710069, China
2
Department of Health, Sport, and Exercise Sciences, School of Education, University of Kansas, Lawrence, KS 66045, USA
3
Center for Experimental Economics in Education, Shaanxi Normal University, Xi’an 710127, China
4
Faculty of Liberal Arts, Northwest University, Xi’an 710069, China
5
Rural Education Action Program, Freeman Spogli Institute for International Studies, Stanford University, Stanford, CA 94305, USA
6
School of Economics and Management, Wuhan University, Wuhan 430072, China
7
School of Economics, Northwest University of Political Science and Law, Xi’an 710122, China
8
School of Economics and Finance, Xi’an Jiaotong University, Xi’an 710061, China
9
Institute of Social Medicine and Health Administration, School of Public Health, Shandong University, Jinan 250012, China
10
Department of Health Policy and Management, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA