1. Department of Thoracic and Cardiovascular Surgery, Kangwon National University School of Medicine, Chuncheon, Korea.
2. Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea.
3. Department of Molecular and Cellular Biochemistry, Kangwon National University School of Medicine, Chuncheon, Korea.
4. Department of Physiology, Kangwon National University School of Medicine, Chuncheon, Korea.
5. Department of Medical Environmental Biology and Tropical Medicine, Kangwon National University School of Medicine, Chuncheon, Korea.