1. School of Public Policy and Administration, Chongqing University, Chongqing, PR China
2. School of Political Science and Public Administration, Wuhan University, Wuhan, PR China
3. Institute of Income Distribution and Public Finance, Zhongnan University of Economics and Law, Wuhan, PR China
4. Department of Political Science, Northern Illinois University, Dekalb, IL, USA
5. School of Economics and Management, China University of Geosciences, Wuhan, PR China