About the Authors

Hideaki Sakawa

Contributed equally to this work with: Hideaki Sakawa, Naoki Watanabel

Roles Conceptualization, Funding acquisition, Project administration, Writing – original draft

sakawa@econ.nagoya-cu.ac.jp

Affiliation Graduate School of Economics, Nagoya City University, Nagoya, Aichi, Japan

Naoki Watanabel

Contributed equally to this work with: Hideaki Sakawa, Naoki Watanabel

Roles Data curation, Investigation, Methodology, Software, Writing – review & editing

Affiliation Graduate School of Economics, Nagoya City University, Nagoya, Aichi, Japan

Competing Interests

The authors have declared that no competing interests exist.