1. Division of Cardiology, Department of Internal Medicine, Inje University College of Medicine, Ilsan Paik Hospital, Goyang, Korea.
2. Department of Thoracic Surgery, Inje University College of Medicine, Ilsan Paik Hospital, Goyang, Korea.
3. Department of Pathology, Inje University College of Medicine, Ilsan Paik Hospital, Goyang, Korea.