1. Beth Israel Lahey Hospital, Department of Radiology, Boston, MA, USA
2. Harvard Medical School, Boston, MA, USA
3. University of Texas Southwestern Medical Center, Department of Radiology, Dallas, TX, USA
4. Weill Cornell Medical College, Department of Radiology, New York, NY, USA
5. Massachusetts General Hospital, Department of Radiology, Boston, MA, USA
6. Saint Vincent Hospital at Worcester Medical Center, Department of Radiology, Worcester, MA, USA
7. Duke University Hospital, Department of Radiology, Durham, NC, USA