1. Department of Radiology, Pohang St. Mary’s Hospital, Pohang, Korea
2. Department of Radiology, St. Paul’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
3. Department of Radiology, Kyung Hee University Hospital at Gangdong, Kyung Hee University College of Medicine, Seoul, Korea
4. Division of Vascular Surgery, Department of General Surgery, Daegu Catholic University Medical Center, Daegu, Korea
5. Department of Surgery, St. Paul’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea