About the Authors

Akihiro Kawase

Contributed equally to this work with: Akihiro Kawase, Mototsugu Fukushige

Roles Conceptualization, Data curation, Formal analysis, Methodology, Writing – original draft

kawase@toyo.jp

Affiliation Faculty of Economics, Toyo University, Tokyo, Japan

Mototsugu Fukushige

Contributed equally to this work with: Akihiro Kawase, Mototsugu Fukushige

Roles Conceptualization, Methodology, Validation, Writing – review & editing

Affiliation Graduate School of Economics, Osaka University, Osaka, Japan

Competing Interests

The authors have declared that no competing interests exist.