Gilkeson R C, Utlak D J, Clampitt M, Brandt M, Morrison S
Department of Radiology, University Hospitals of Cleveland, Case Western Reserve University School of Medicine, OH 44106, USA.
AJR Am J Roentgenol. 1999 Apr;172(4):1066-8. doi: 10.2214/ajr.172.4.10587148.