Hoffer E K, Bloch R D, Mulligan M S, Borsa J J, Fontaine A B
Department of Radiology, Section of Vascular and Interventional Radiology, University of Washington Medical Center, 1949 Pacific Ave. N.E., Box 357115, Seattle, WA 98195, USA.
AJR Am J Roentgenol. 2001 Apr;176(4):1040-2. doi: 10.2214/ajr.176.4.1761040.