1. School of Management, Jiangsu University, Zhenjiang, Jiangsu 212013, China
2. Department of Healthare Policy and Research, Weill Cornell Medicine, New York, NY 10065, USA
3. Department of Economics, The Graduate Center, City University of New York, New York, NY 10010, USA
4. Department of Public Administration, Shantou University, Shantou, Guangdong 515063, China
5. Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, China