1. Department of Thoracic and Cardiovascular Surgery, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Korea
2. Department of Laboratory Medicine, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Korea
3. Department of Neurology, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Korea