1. Institute of Advanced Manufacturing Technologies, Peter the Great St. Petersburg Polytechnic University, 195251 St Petersburg, Russia
2. Institute of Comparative Economic Studies, Hosei University, Tokyo 194-0298, Japan
3. Department of Global Health Economics and Policy, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
4. Institute of Economics, Urals Branch, Russian Academy of Sciences, 620014 Ekaterinburg, Russia