[1] Fudan Univ, Sch Int Relat & Publ Affairs, Shanghai 200433, Peoples R China
[2] Nanjing Univ Finance & Econ, Sch Accountancy, Nanjing 210023, Peoples R China
[3] Fudan Univ, Sch Econ, Shanghai 200433, Peoples R China
[4] Nanjing Serv Ctr Technol Transfer, Nanjing 210018, Peoples R China
[5] Nanjing Univ Posts & Telecommun, Sch Management, Nanjing 210003, Peoples R China