1. School of Economics and Management, Southwest Jiaotong University, Chengdu, People’s Republic of China
2. Service Science and Innovation Key Laboratory of Sichuan Province, Chengdu, People’s Republic of China
3. Department of Economics, University of Pretoria, Hatfield, South Africa
4. Department of Economics, Copenhagen Business School, Frederiksberg, Denmark
5. Central Bank of the Republic of Turkey, Ankara, Turkey