Huang Steven Y, Levine Marc S, Raper Steven E
Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA.
AJR Am J Roentgenol. 2005 Mar;184(3 Suppl):S65-6. doi: 10.2214/ajr.184.3_supplement.01840s65.