1. Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
2. Department of Thoracic and Cardiovascular Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea.
3. Division of Cardiology, Incheon Sejong Hospital, Incheon, Korea.
4. Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hospital and Medical School, Gwangju, Korea.
5. Department of Pathology and Translational Genomics, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea.
6. Department of Thoracic and Cardiovascular Surgery, Bucheon Sejong Hospital, Bucheon, Korea.
7. Department of Pathology, Incheon Sejong Hospital, Incheon, Korea.