1. 1Laboratory of Systems Pharmacology, Harvard Medical School, Boston, Massachusetts.
2. 2Ludwig Center at Harvard, Boston, Massachusetts.
3. 3Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts.
4. 4Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.
5. 5Department of Systems Biology, Harvard Medical School, Boston, Massachusetts.