About the Authors

Yunwei Gai

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

ygai@babson.edu

Affiliation Economics Division, Babson College, Wellesley, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.