1. Division of Vascular Surgery, Department of Surgery, Asan Medical Centre, University of Ulsan College of Medicine, 388-1 Pungnap-2dong, Songpa-gu, 138-736, Seoul, Korea
2. Department of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, 388-1 Pungnap-2dong, Songpa-gu, 138-736, Seoul, Korea