Thornbury J R, Ornstein D K, Choyke P L, Langlotz C P, Weinreb J C
Division of Urology, Department of Surgery, University of North Carolina at Chapel Hill, 427 Burnett-Womack Bldg., CB 7235, Chapel Hill, NC 27599-7235, USA.
AJR Am J Roentgenol. 2001 Jan;176(1):17-22. doi: 10.2214/ajr.176.1.1760017.