1. Division of Cardiovascular Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
2. Institute of Clinical Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
3. Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
4. Institute of Hospital and Health Care Administration, National Yang-Ming University School of Medicine, Taipei, Taiwan
5. Department of Physical Education and Health, University of Taipei, Taipei, Taiwan