1. Department of Radiology, Massachusetts General Hospital and Harvard Medical School, 75 Blossom Ct, Ste 248, Boston, MA 02114.
2. MGH Webster Center for Quality and Safety, Massachusetts General Hospital and Harvard Medical School, Boston, MA.
3. Siemens Healthcare USA Inc., Malvern, PA.
4. Siemens Healthineers, Forchheim, Germany.