1. 1Howard Hughes Medical Institute and Department of Molecular Biology, Massachusetts General Hospital, Boston, Massachusetts.
2. 2Broad Institute of MIT and Harvard, Cambridge, Massachusetts.
3. 3Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts.
4. 4Cancer Center, Massachusetts General Hospital, Boston, Massachusetts.
5. 5Harvard Medical School, Boston, Massachusetts.
6. 6Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts.
7. 7Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts.
8. 8Department of Medicine, University of Rochester, Rochester, New York.
9. 9Thyroid Unit, Massachusetts General Hospital, Boston, Massachusetts.
10. 10Department of Systems Biology, Harvard Medical School, Boston, Massachusetts.