Ramchandani P, Cardella J F, Grassi C J, Roberts A C, Sacks D, Schwartzberg M S, Lewis C A
Department of Radiology, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania, USA.
J Vasc Interv Radiol. 2001 Nov;12(11):1247-51. doi: 10.1016/s1051-0443(07)61546-2.