Youk Ji Hyun, Kim Min Jung, Kim Eun-Kyung, Lee Ji Young, Oh Ki Keun, Park Byeong Woo
Department of Diagnostic Radiology, Yonsei University College of Medicine, Seodaemun-ku, Shinchon-dong 134, Seoul 120-752, Korea.
J Ultrasound Med. 2006 Jul;25(7):921-4. doi: 10.7863/jum.2006.25.7.921.