About the Authors

Satoru Onodera

sonodera@iwate-med.ac.jp

Affiliation Department of Anatomy, School of Medicine, Iwate Medical University, Morioka, Japan

T. Philip Hicks

Affiliation Department of Biology, Faculty of Science and Environmental Studies, Lakehead University, Thunder Bay, Ontario, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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