About the Authors

Akihiro Shiina

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

shiina-akihiro@faculty.chiba-u.jp

Affiliation Division of Medical Care and Treatment, Center for Forensic Mental Health, Chiba University, Chiba, Japan

Tomihisa Niitsu

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

Affiliation Department of Psychiatry, Graduate School of Medicine, Chiba University, Chiba, Japan

Masaomi Iyo

Roles Project administration, Supervision

Affiliation Department of Psychiatry, Graduate School of Medicine, Chiba University, Chiba, Japan

Competing Interests

This work was supported by the public interest OTC drug self-medication promotion foundation (http://www.otc-spf.jp/) in Japan. We have no other conflicts of interest to report regarding this study.