1. Department of Biochemistry and Cell Biology, Kyungpook National University School of Medicine, Daegu, Korea.
2. Department of Thoracic Surgery, Kyungpook National University School of Medicine, Daegu, Korea.
3. Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea.
4. Department of Pathology, Kyungpook National University School of Medicine, Daegu, Korea.
5. Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seongnam, Korea.