1. Swedish Institute for Social Research (SOFI), Stockholm University, Stockholm, Sweden; and Centre for Entrepreneurship and Spatial Economics (CEnSE), Jönköping International Business School, Jönköping, Sweden.
2. Department of Agricultural and Consumer Economics and Center for Climate, Regional, Environmental and Trade Economics, University of Illinois at Urbana-Champaign, Champaign, IL, USA.
3. Korea Labor Institute, Sejong National Research Complex, Sejong-si, Korea.