About the Authors

Yasuhiro Sato

Roles Conceptualization, Data curation, Funding acquisition, Writing – original draft, Writing – review & editing

Affiliation Faculty of Economics, University of Tokyo, Tokyo, Japan

Keita Shiba

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

kshiba@shinshu-u.ac.jp

Affiliation Research Center for Social Systems, University of Shinshu, Nagano, Japan

Competing Interests

The authors have declared that no competing interests exist.