Lawler L P, Fishman E K
The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University, 601 N. Caroline St., Rm. 3254, Baltimore, MD 21287, USA.
AJR Am J Roentgenol. 2001 Jul;177(1):202-4. doi: 10.2214/ajr.177.1.1770202.