1Cardiology Division, Division of Cardiovascular Surgery, Cardiovascular Center, Department of Diagnostic Radiology, Yonsei University, College of Medicine, Seoul, Korea
2Cardiology Division, Division of Cardiovascular Surgery, Cardiovascular Center, Department of Diagnostic Radiology, Yonsei University, College of Medicine, Seoul, Korea
3Division of Cardiovascular Surgery, Cardiovascular Center, Department of Diagnostic Radiology, Yonsei University, College of Medicine, Seoul, Korea
4Department of Diagnostic Radiology, Yonsei University, College of Medicine, Seoul, Korea
5Cardiology Division, Division of Cardiovascular Surgery, Cardiovascular Center, Department of Diagnostic Radiology, Yonsei University, College of Medicine, Seoul, Korea
*Cardiology Division Cardiovascular Center Yonsei University College of Medicine C.P.O Box 8044 Seoul, Korea