[1] Southwestern Univ Finance & Econ, Res Inst Econ & Management, Chengdu, Peoples R China
[2] Southwestern Univ Finance & Econ, Res Inst Econ & Management, Collaborat Innovat Ctr Financial Secur, Chengdu, Peoples R China
[3] Drexel Univ, LeBow Coll Business, Sch Econ, Philadelphia, PA 19104 USA