1 Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, Tennessee. Electronic address: [email protected].
2 Department of Radiology, Cornell University Joan and Sanford I Weill Medical College, New York.
3 Department of Radiology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.
4 Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, Tennessee.
5 Department of Radiology, Johns Hopkins Medicine, Baltimore, Maryland.
6 Department of Radiology, Harvard Medical School, BIDMC, Boston, Massachusetts.