1. Department of Radiology, Jeju National University, School of Medicine, Jeju Natuional University Hospital, 15, Aran 13-gil, Jeju 63241, Republic of Korea
2. Department of Radiology, Gyeongsang National University, School of Medicine, Gyeongsang National University Changwon Hospital, 11 Samjeongja-ro, Seongsan-gu, Changwon 51472, Republic of Korea
3. Department of Radiology, Gyeongsang National University, School of Medicine, Gyeongsang National University Hospital, Jinju 52727, Republic of Korea