1. Graduate Institute of Life Sciences, National Defense Medical Center, Taipei City, Taiwan
2. Department of Public Health, College of Medicine, Fu-Jen Catholic University, New Taipei City, Taiwan
3. Department of Medicine, Mackay Medicine, Nursing, and Management College, New Taipei City, Taiwan
4. School of Nursing, National Defense Medical Center, Taipei City, Taiwan
5. Department of Health Business Administration, Mei-Ho University, Pingtung County, Taiwan
6. School of Public Health, College of Public Health and Nutrition, Taipei Medical University, Taipei City, Taiwan
7. Digestive Disease Center, Chang-Hua Show-Chwan Memorial Hospital, Changhua County, Taiwan
8. Sleep Center, Chang-Bing Show-Chwan Memorial Hospital, Changhua County, Taiwan
9. School of Public Health, National Defense Medical Center, Taipei City, Taiwan