1. Institute of Population Health Sciences, National Health Research Institutes, Miaoli, Taiwan
2. Department of Medical Education, Taipei Veterans General Hospital, Taipei, Taiwan
3. Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
4. Institute of Public Health, National Yang-Ming University, Taipei, Taiwan
5. Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan
6. Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan