About the Authors

Masayoshi Takahashi

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

Shingo Nishida

Affiliations Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan, Maezawa Hospital, Tochigi, Japan

Masaki Nakamura

Affiliations Department of Somnology, Tokyo Medical University, Tokyo, Japan, Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan

Mina Kobayashi

Affiliation Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan

Kentaro Matsui

Affiliations Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan, Department of Psychiatry, Tokyo Women’s Medical University, Tokyo, Japan

Eiki Ito

Affiliations Department of Somnology, Tokyo Medical University, Tokyo, Japan, Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan

Akira Usui

Affiliation Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan

Yuichi Inoue

inoue@somnology.com

Affiliations Department of Somnology, Tokyo Medical University, Tokyo, Japan, Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan

Competing Interests

The authors have read the journal's policy and the authors of this manuscript have the following competing interests: M. Takahashi is an employee of Otsuka Pharmaceutical Co., Ltd. S. Nishida has received the grant from JSPS KAKENHI Grant Number 24621011, the honoraria for lectures, including service on speakers’ bureau from MSD K.K. M. Nakamura has received the honoraria for lectures, including service on speakers’ bureaus from MSD K.K. and Otsuka Pharmaceutical Co., Ltd. M. Kobayashi has received the grant from JSPS KAKENHI Grant Number 15K11463. K. Matsui has received the honoraria for lectures, including service on speakers’ bureaus from MSD K.K., Meiji Seika Pharma Co., Ltd., Yoshitomiyakuhin Corporation. Y. Inoue has grants from Japan Agency for Medical Research and Development (AMED), during the conduct of the study; grants and other from Takeda Pharmaceutical Co., Ltd., grants and other from Astellas Pharma Inc., grants and other from Philips Respironics, other from Alfresa Pharma, grants and other from MSD K.K., grants and other from Eisai Co., Ltd., grants from Pacfic Medico, grants and other from Otsuka Pharmaceutical Co., Ltd., other from Yoshitomiyakuhin Corporation, grants from Hisamitsu Pharmaceutical, outside the submitted work. The other authors have indicated no potential conflict of interest to declare. This does not alter our adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceptualization: SN YI. Data curation: MT SN YI. Formal analysis: MT SN YI. Funding acquisition: SN YI. Investigation: SN MN MK KM EI AU YI. Methodology: SN YI. Project administration: SN YI. Resources: SN YI. Supervision: YI. Visualization: MT YI. Writing – original draft: MT YI. Writing – review & editing: MT YI.