About the Authors

Hideaki Kawaguchi

Contributed equally to this work with: Hideaki Kawaguchi, Soichi Koike

hikawaguchi-tky@umin.ac.jp

Affiliation Department of Medical Informatics and Economics, The University of Tokyo, Tokyo, Japan

Soichi Koike

Contributed equally to this work with: Hideaki Kawaguchi, Soichi Koike

Affiliations Division of Health Policy and Management, Center for Community Medicine, Jichi Medical University, Tochigi, Japan, Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HK. Performed the experiments: HK. Analyzed the data: HK SK. Contributed reagents/materials/analysis tools: HK. Wrote the paper: HK SK.