Kim Y S, Kim Y, Cho O K, Koh B H, Rhim H, Park D W, Park C K
Department of Diagnostic Radiology, College of Medicine, Hanyang University, 249-1, Kyomoon-dong, Kuri-si, Kyounggi-do 471-701, South Korea.
J Clin Ultrasound. 2001 Mar-Apr;29(3):157-85. doi: 10.1002/1097-0096(200103/04)29:3<157::aid-jcu1016>3.0.co;2-8.