1. Taipei Medical University, Taipei, Taiwan
2. National Taiwan University College of Public Health, Taipei, Taiwan
3. National Taipei College of Nursing, Taipei, Taiwan
4. Chang Jung Christian University, Tainan County, Taiwan
5. National Cheng-Kung University Hospital and National Cheng-Kung University College of Medicine, Tainan, Taiwan
6. National Taiwan University College of Public Health, Taipei, Taiwan,