[1] Yichun Univ, Sch Econ & Management, Yichun, Jiangxi, Peoples R China
[2] Zhongnan Univ Econ & Law, Sch Econ, Wuhan 430073, Peoples R China
[3] McMaster Univ, Mississauga, ON, Canada
[4] Zhongnan Univ Econ & Law, Sch Finance, Wuhan, Peoples R China