1. From the Division of Cardiovascular Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
2. Department of Anesthesia, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
3. School of Public Health, National Defense Medical Center, Taipei, Taiwan
4. Department of Medical Research, Tri-Service General Hospital, Taipei, Taiwan
5. Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
6. Medical Affairs Bureau, Ministry of National Defense, Taiwan, R.O.C.