1. Department of Internal Medicine, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-290, Korea.
2. Department of Anatomy, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-290, Korea.
3. Department of Radiation Oncology, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-290, Korea.
4. Department of Thoracic and Cardiovascular Surgery, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-290, Korea.