1. Division of Cardiology, Department of Internal Medicine, Cardiovascular Imaging Center, Heart Vascular Stroke Institute, Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Republic of Korea
2. Division of Cardiology, Department of Internal Medicine, Kangwon National University Hospital Kangwon National University School of Medicine Chuncheon Republic of Korea
3. Department of Thoracic and Cardiovascular Surgery, Heart Center, Heart Vascular Stroke Institute, Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Republic of Korea