1. Department of Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA.
2. Department of Imaging, Dana-Farber Cancer Institute and Harvard Medical School, 450 Brookline Ave, Boston, MA 02215.
3. Department of Radiology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA.
4. Department of Radiology, Beth Israel Lahey Health, Tufts University School of Medicine, Boston, MA.