1. Department of Medicine; Korea University Graduate School; Seoul Korea
2. Department of Integrated Biomedical and Life Sciences; Korea University Graduate School; Seoul Korea
3. Department of Thoracic and Cardiovascular Surgery; Guro Hospital; Seoul Korea
4. Division of Cardiology; Nown Eulji Hospital; Eulji University; Seoul Korea
5. School of Mechanical & Aerospace Engineering; Seoul National University; Seoul Korea
6. Cardiovascular Center; Korea University Guro Hospital; Seoul Korea