1. School of Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan.
2. Department of Anesthesiology, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.
3. Graduate Institute of Clinical Medicine, Taipei Medical University, Taipei, Taiwan.
4. School of Public Health, College of Public Health, Taipei Medical University, Taipei, Taiwan.
5. Sleep Research Center, Taipei Medical University, Taipei, Taiwan.