Lei Tianhu, Udupa Jayaram K, Saha Punam K, Odhner Dewey, Baum Richard, Tadikonda Satish K, Yucel E Kent
Department of Radiology, University of Pennsylvania, Philadelphia 19104-6021, USA.
Acad Radiol. 2002 May;9 Suppl 1:S127-33. doi: 10.1016/s1076-6332(03)80417-8.