1. Department of Internal Medicine, Gyeongsang National University Hospital, Gyeongsang Nationtal University School of Medicine, Jinju, Korea
2. Department of Thoracic and Cardiovascular Surgery, Gyeongsang National University Changwon Hospital, Gyeongsang Nationtal University School of Medicine, Changwon, Korea
3. Department of Thoracic and Cardiovascular Surgery, Gyeongsang National University Hospital, Gyeongsang Nationtal University School of Medicine, Jinju, Korea
4. Department of Neurology, Gyeongsang National University Changwon Hospital, Gyeongsang Nationtal University School of Medicine, Changwon, Korea