Titton Ross L, Lucey Brian C, Gervais Debra A, Boland Giles W, Mueller Peter R
Department of Radiology, Division of Abdominal Imaging and Intervention, Massachusetts General Hospital, White 270, 55 Fruit St., Boston, MA 02114, USA.
AJR Am J Roentgenol. 2002 Sep;179(3):633-6. doi: 10.2214/ajr.179.3.1790633.