Titton Ross L, Gryzenia Paul C, Gervais Debra A, Arellano Ronald S, Boland Giles W, Mueller Peter R
Division of Abdominal Imaging and Intervention, Department of Radiology-White 270, Massachusetts General Hospital, 55 Fruit St., Boston, MA 02114, USA.
AJR Am J Roentgenol. 2003 Apr;180(4):1079-84. doi: 10.2214/ajr.180.4.1801079.