1. Department of Radiology, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Gyeonggi-do, Republic of Korea
2. Vascular and Pain Clinic, Seoul Sun Orthopedic Surgery Hospital, Seoul, Republic of Korea
3. Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital, Cheonan, Republic of Korea
4. Department of Radiology, University of Ulsan College of Medicine, Gangneung Asan Hospital, Gangneung, Gangwon, Republic of Korea
5. Vascular Center, The Eutteum Orthopedic Surgery Hospital, Paju, Republic of Korea
6. Department of Radiology, Andong Hospital, Andong, Republic of Korea