About the Authors

Shingo Konno

Affiliation Department of Neurology, Toho University Ohashi Medical Center, Tokyo, Japan

Shigeaki Suzuki

sgsuzuki@z3.keio.jp

Affiliation Department of Neurology, Keio University School of Medicine, Tokyo, Japan

Masayuki Masuda

Affiliation Department of Neurology, Tokyo Medical University, Tokyo, Japan

Yuriko Nagane

Affiliation Department of Neurology, Hanamaki General Hospital, Iwate, Japan

Emiko Tsuda

Affiliation Department of Neurology, Sapporo Medical University, Hokkaido, Japan

Hiroyuki Murai

Affiliation Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Tomihiro Imai

Affiliation Department of Neurology, Sapporo Medical University, Hokkaido, Japan

Toshiki Fujioka

Affiliation Department of Neurology, Toho University Ohashi Medical Center, Tokyo, Japan

Norihiro Suzuki

Affiliation Department of Neurology, Keio University School of Medicine, Tokyo, Japan

Kimiaki Utsugisawa

Affiliation Department of Neurology, Hanamaki General Hospital, Iwate, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SK SS. Analyzed the data: SK SS MM YN ET HM TI TF. Contributed reagents/materials/analysis tools: SS NS KU. Wrote the paper: SK SS NS KU.