About the Authors

Ryosuke Niimi

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

niimi@human.niigata-u.ac.jp

Affiliation Faculty of Humanities, Niigata University, Niigata, Japan

Mami Goto

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology

Affiliation Faculty of Humanities, Niigata University, Niigata, Japan

Competing Interests

The first author (RN) received a grant from the KOSE Kosmetology Research Foundation. This does not alter our adherence to PLOS ONE policies on sharing data and materials. The scond author (MG) declares no competing interests.