Prout Tyler M, Taylor Andrew J, Pickhardt Perry J
Department of Radiology, University of Wisconsin Medical School, E3/311 Clinical Science Center, 600 Highland Ave., Madison, WI 53792-3252, USA.
AJR Am J Roentgenol. 2006 Feb;186(2):535-8. doi: 10.2214/AJR.04.1791.