About the Authors

Holger Flechsig

holgerflechsig@hiroshima-u.ac.jp

Affiliation Department of Mathematical and Life Sciences, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Japan

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

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