1. Center for Systems Biology, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
2. Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
3. Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
4. Department of Systems Biology, Harvard Medical School, Boston, Massachusetts 02115, United States
5. BreastCare Center, Division of Hematology Oncology, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02115, United States
6. Massachusetts General Hospital Cancer Center, Boston, Massachusetts 02114, United States