[1] Chongqing Technol & Business Univ, Sch Econ, Chongqing 400067, Peoples R China
[2] Southwestern Univ Finance & Econ, Sch Publ Finance & Taxat, Chengdu 611130, Sichuan, Peoples R China
[3] Zhongnan Univ Econ & Law, Sch Publ Finance & Taxat, Wuhan 430073, Hubei, Peoples R China
[4] Southeast Univ, Sch Econ & Management, Nanjing 211189, Jiangsu, Peoples R China