1. Department of Reproductive Health, Institute of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
2. Department of Medical Technology and Clinical Engineering, Faculty of Health and Medical Sciences, Hokuriku University, Ishikawa, Japan
3. Sleep Center, Social Medical Corporation Shunkaikai, Inoue Hospital, Nagasaki, Japan
4. Department of General Medicine, Institute of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
5. International Institute for Integrative Sleep Medicine, University of Tsukuba, Ibaraki, Japan