1. Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan.
2. Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
3. Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
4. Division of Radiology, Yonghe Cardinal Tien Hospital, New Taipei City, Taiwan.
5. Division of Biostatistics, Institute of Public Health, National Yang-Ming University, Taipei, Taiwan.
6. Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei, Taiwan.
7. Department of Surgery, Division of Cardiovascular Surgery, Taipei Veterans General Hospital, Taipei, Taiwan.
8. Present address: Division of Cardiovascular Surgery, Taipei Municipal Wanfang Hospital, Taipei Heart Institute, Taipei Medical University, 111, Sec 3, Xinglong Rd, Taipei 11696, Taiwan.