1. Division of Chest Medicine, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
2. College of Medicine, National Chung Hsing University, Taichung, Taiwan
3. Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
4. College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
5. Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
6. Taiwan Cancer Registry, Taipei, Taiwan
7. Division of Pulmonary Medicine, Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan
8. School of Medicine, Chung Shan Medical University, Taichung, Taiwan
9. Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
10. Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
11. Division of Critical Care and Respiratory Therapy, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
12. National Institute of Cancer Research, National Health Research Institutes, Miaoli, Taiwan
13. Division of Thoracic Surgery, Department of Surgery, Chung Shan Medical University Hospital, Taichung, Taiwan