About the Authors

Keisuke Suzuki

keisuke@dokkyomed.ac.jp

Affiliation Department of Neurology, Dokkyo Medical University, Tochigi, Japan

Masayuki Miyamoto

Affiliation School of Nursing, Dokkyo Medical University, Tochigi, Japan

Tomoyuki Miyamoto

Affiliation Department of Neurology, Dokkyo Medical University Koshigaya Hospital, Saitama, Japan

Yuichi Inoue

Affiliation Yoyogi Sleep Disorder Centre, Tokyo, Japan

Kentaro Matsui

Affiliation Yoyogi Sleep Disorder Centre, Tokyo, Japan

Shingo Nishida

Affiliation Yoyogi Sleep Disorder Centre, Tokyo, Japan

Kenichi Hayashida

Affiliation Sleep & Stress Clinic, Tokyo, Japan

Akira Usui

Affiliation Yoyogi Sleep Disorder Centre, Tokyo, Japan

Yoichiro Ueki

Affiliation Sleep & Stress Clinic, Tokyo, Japan

Masaki Nakamura

Affiliation Yoyogi Sleep Disorder Centre, Tokyo, Japan

Momoyo Murata

Affiliation Kokubunji Sakura Clinic, Tochigi, Japan

Ayaka Numao

Affiliation Department of Neurology, Dokkyo Medical University, Tochigi, Japan

Yuji Watanabe

Affiliation Department of Neurology, Dokkyo Medical University, Tochigi, Japan

Shiho Suzuki

Affiliation Department of Neurology, Dokkyo Medical University, Tochigi, Japan

Koichi Hirata

Affiliation Department of Neurology, Dokkyo Medical University, Tochigi, Japan

Competing Interests

The authors have the following interests. Kenichi Hayashida and Yoichiro Ueki are employed by Sleep & Stress Clinic and Momoyo Murata by Kokubunji Sakura Clinic. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: KS M. Miyamoto TM YI K. Hirata. Performed the experiments: KS M. Miyamoto TM YI KM SN K. Hayashida AU YU MN M. Murata AN YW SS K. Hirata. Analyzed the data: KS M. Miyamoto TM. Contributed reagents/materials/analysis tools: KS M. Miyamoto. Wrote the paper: KS. Critical revision of the manuscript: M. Miyamoto TM YI K. Hirata.