1. School of Public Health, Taipei Medical University, Taipei, Taiwan
2. Sleep Center, Taipei Medical University Hospital, Taipei, Taiwan
3. Department of Physical Medicine and Rehabilitation, Taipei Medical University Hospital, Taipei, Taiwan
4. Department of Physical Medicine and Rehabilitation, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
5. School of Health Care Administration, College of Medicine
6. Sleep Research Center, Taipei Medical University, Taipei, Taiwan