1. Department of Thoracic and Cardiovascular Surgery, St. Paul Hospital, The Catholic University of Korea, Jeonong-dong Dongdaemoon-gu, Seoul, South Korea
2. Department of Thoracic and Cardiovascular Surgery, St. Vincent’s Hospital, The Catholic University of Korea, Ji-dong Paldal-gu, Suwon, Gyeonggi-do, South Korea
3. Department of Radiology, St. Vincent’s Hospital, The Catholic University of Korea, Ji-dong Paldal-gu, Suwon, Gyeonggi-do, South Korea