1. Department of Psychiatry; Osaka University Health Care Center; Toyonaka Japan
2. Psychiatry, Department of Integrated Medicine, Division of Internal Medicine; Osaka University Graduate School of Medicine; Suita Japan
3. The Sleep Medical Center of Osaka University Hospital; Suita Japan
4. Department of Neuropsychiatry, Faculty of Life Sciences; Kumamoto University; Kumamoto Japan
5. Center for Medical Education and Research, Faculty of Life Sciences; Kumamoto University; Kumamoto Japan
6. Department of Rehabilitation Medicine; Akita Prefectural Centre of Rehabilitation and Psychiatric Medicine; Daisen Japan
7. Department of Neuropsychiatry, Graduate School of Medicine; Ehime University; Toon Japan
8. Departments of Neurology and Cognitive Disorders; Hyogo Prefectural Rehabilitation Center at Nishi-harima; Tatsuno Japan
9. Department of Behavioral Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai Japan
10. Zaidan-Niihama Hospital; Niihama Japan
11. Department of Community and Geriatric Nursing; Ehime University Graduate School of Medicine; Toon Japan
12. Aino University; Ibaraki Japan