[Wang, Yang] Wuhan Univ, Econ & Management Sch, 299 Bayi Rd, Wuhan 430072, Peoples R China.
[Tian, Chenling] Cent China Normal Univ, Sch Econ & Business Adm, 382 Xiongchu Rd, Wuhan 430079, Peoples R China.
[Jiang, Xia] Nanjing Univ, Business Sch, 22 Hankou Rd, Nanjing 210093, Peoples R China.
[Tong, Yang; Tong, Y] Zhejiang Normal Univ, Coll Econ & Management, China Afr Int Business Sch, 688 Yingbin Rd, Jinhua 321004, Peoples R China.