About the Authors

Junko Takahashi

junko-takahashi@aist.go.jp

Affiliation National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan

Masaki Misawa

Affiliation Human Technology Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan

Hitoshi Iwahashi

Affiliations Health Research Institute, National Institute of Advanced Industrial Science and Technology, Takamatsu, Kagawa, Japan, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JT HI. Performed the experiments: JT HI. Analyzed the data: JT MM HI. Wrote the paper: JT.