1. Massachusetts General Hospital, Boston, USA
2. Harvard Medical School, Boston, MA, USA
3. Broad Institute of MIT and Harvard, Cambridge, MA, USA
4. Vanderbilt University Medical Center, Nashville, TN, USA
5. Oregon State University, Corvallis, USA
6. Temple University, Philadelphia, PA, USA
7. University of Delaware, Newark, USA
8. The University of North Carolina at Chapel Hill, USA