About the Authors

Takashi Shinzato

Contributed equally to this work with: Takashi Shinzato, Muneki Yasuda

takashi.shinzato@r.hit-u.ac.jp

Affiliation Mori Arinori Center for Higher Education and Global Mobility, Hitotsubashi University, Kunitachi, Tokyo, Japan

Muneki Yasuda

Contributed equally to this work with: Takashi Shinzato, Muneki Yasuda

Affiliation Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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