Zeman R K, Baron R L, Jeffrey R B, Klein J, Siegel M J, Silverman P M
Department of Radiology-Patrick 113, Fletcher Allen Health Care, Medical Center Hospital of Vermont Campus, University of Vermont College of Medicine, Burlington 05401, USA.
AJR Am J Roentgenol. 1998 Jun;170(6):1427-38. doi: 10.2214/ajr.170.6.9609149.