1. Department of Economics, School of Economics and Management, Zhejiang Sci-Tech University, Hangzhou 310018, China
2. Institute of Advanced Manufacturing Technologies, Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia
3. Institute of Comparative Economic Studies, Hosei University, Tokyo 194-0298, Japan
4. Department of Global Health Economics and Policy, University of Kragujevac, 34000 Kragujevac, Serbia