1. Division of Thoracic Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
2. Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
3. Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan
4. Department of Pathology, Taipei Veterans General Hospital, Taipei, Taiwan
5. Department of Health Care Administration, Chang Jung Christian University, Tainan City, Taiwan
6. Division of Cardiovascular Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan