1. Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine
2. Department of Thoracic and Cardiovascular Surgery, Gyeongsang National University Changwon Hospital, Gyeongsang National University School of Medicine
3. Department of Thoracic and Cardiovascular Surgery, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine
4. Department of Emergency Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine