About the Authors

Toru Fukuhara

torufk@ninus.ocn.ne.jp

Affiliation Department of Neurological Surgery, National Hospital Organization Okayama Medical Center, Okayama, Japan

Mizuho Aoi

Affiliation Department of Neurological Surgery, National Hospital Organization Okayama Medical Center, Okayama, Japan

Yoichiro Namba

Affiliation Department of Neurological Surgery, National Hospital Organization Okayama Medical Center, Okayama, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TF MA YN. Performed the experiments: TF. Analyzed the data: TF. Contributed reagents/materials/analysis tools: TF MA YN. Contributed to the writing of the manuscript: TF.