Gabriel Helena A, Feng Chun, Mendelson Ellen B, Benjamin Stefanie
Department of Radiology, Northwestern University Medical School, 676 North St. Clair St., Ste. 800, Chicago, IL 60611, USA.
AJR Am J Roentgenol. 2004 Apr;182(4):1081-3. doi: 10.2214/ajr.182.4.1821081.