Courcoutsakis N A, Hill S C, Chow C K, Gralnick H
Diagnostic Radiology Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA.
AJR Am J Roentgenol. 1997 Nov;169(5):1397-9. doi: 10.2214/ajr.169.5.9353467.