1. Department of Surgery, Soonchunhyang University College of Medicine, Soonchunhyang University Cheonan Hospital, Cheonan 31151, Republic of Korea
2. Department of Radiology, Soonchunhyang University College of Medicine, Soonchunhyang University Cheonan Hospital, Cheonan 31151, Republic of Korea
3. Department of Medical Life Science, Soonchunhyang University, Asan 31538, Republic of Korea