1. Division of Thoracic Surgery, Taichung Veterans General Hospital, Taichung, Taiwan, R.O.C.
2. Graduate Institute of Biomedicine and Biomedical Technology, National Chi Nan University, Taiwan, R.O.C.
3. Division of Cardiovascular Surgery, Department of Surgery, Taichung Veterans General Hospital, Taichung, Taiwan, R.O.C.
4. Division of Metabolic Medicine, Taichung Veterans General Hospital, Taichung, Taiwan, R.O.C.
5. Division of Chest Medicine, Department of Medicine; Taichung Veterans General Hospital, Taichung, Taiwan, R.O.C.