Institution: | (1) Department of Radiology, Yonsei University Severance Hospital, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, South Korea;(2) Department of Pathology, Yonsei University Severance Hospital, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, South Korea; |