1. University of Pittsburgh, Pittsburgh, PA
2. Vanderbilt University, Nashville, TN
3. Stanford University, Palo Alto, CA
4. University of Iowa, Iowa City, IA
5. Mayo Clinic, Rochester, MN
6. Brigham and Women's Hospital, Boston, MA
7. H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
8. Oregon Health and Science University, Portland, OR
9. Johns Hopkins University, Baltimore, MD
10. University of Washington, Seattle, WA
11. University of Pennsylvania, Philadelphia, PA
12. Columbia University, New York, NY
13. Emory University, Atlanta, GA