[1] Shanghai Univ, Sch Econ, 99 Shangda Rd,Baoshan Campus, Shanghai 200444, Peoples R China
[2] ILMA Univ, Fac Management Sci, Dept Business Adm, Karachi, Pakistan
[3] Mirpur Univ Sci & Technol MUST, Dept Econ, Mirpur 10250, Aj&k, Pakistan
[4] Univ Pitesti, Dept Finance Accounting & Econ, Str Targu Din Vale 1, Pitesti 110040, Arges, Romania
[5] Univ Lucian Blaga Sibiu, Doctoral Sch, Bd Victoriei 10, Sibiu 550024, Romania
[6] Cag Univ, Fac Econ & Adm Sci, Mersin, Turkey
[7] China Med Univ, China Med Univ Hosp, Dept Med Res, Taichung, Taiwan