1. Department of Cardiology, Dong-A University College of Medicine, Busan, Korea.
2. Department of Radiology, Dong-A University College of Medicine, Busan, Korea.
3. Department of Thoracic and Cardiovascular Surgery, Dong-A University College of Medicine, Busan, Korea.
4. Department of Pathology, Dong-A University College of Medicine, Busan, Korea.