Kayaba, Momoko
Sasai-Sakuma, Taeko
Takaesu, Yoshikazu
Inoue, Yuichi
Article History
Received: 26 January 2021
Accepted: 28 May 2021
First Online: 28 June 2021
Declarations
:
: Ethical approval for this study was obtained from the Ethical Committee of Japan Depression Center (No.2019_0002). The present study analyzed the data of workers who gave informed consent for the questionnaire use for research purposes. This manuscript was written in accordance with the STROBE statement for cross-sectional studies and the checklist was cited as Additional file .
: Not applicable.
: Department of Somnology is an endowment department, supported with an unrestricted grant from Philips Japan Co., Ltd. and Koike Medical Co., Ltd.