1. University of Nebraska Medical Center, Omaha, Nebraska
2. Rush Medical College, Chicago, Illinois
3. University of Wisconsin, Madison, Wisconsin
4. Mayo Clinic, Rochester, Minnesota
5. Mayo Clinic, Phoenix, Arizona
6. Harbor—UCLA, Los Angeles, California
7. University of Tennessee, Memphis, Tennessee
8. Wellstar Clinical Trials, Marietta, Georgia
9. Miravista Labs, Indianapolis, Indiana