About the Authors
- Ryoichi Nakashima
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* E-mail: one.island.one@gmail.com
Affiliations Research Institute of Electrical Communication, Tohoku University, Sendai, Japan, Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Tokyo, Japan
- Satoshi Shioiri
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Affiliations Research Institute of Electrical Communication, Tohoku University, Sendai, Japan, Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Tokyo, Japan
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: RN SS. Performed the experiments: RN. Analyzed the data: RN. Wrote the paper: RN SS.