1. School of Economics, Lanzhou University, Lanzhou 730000, China
2. College of Business Administration, University of Sharjah, Sharjah 27272, United Arab Emirates
3. Faculty of Economics, Administrative and Social Sciences, Nisantasi University, Istanbul 34100, Turkey
4. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
5. College of Economics and Management, Henan Agriculture University, Zhengzhou 450002, China