1. CORE Center and John H. Stroger Hospital, Chicago, Illinois.
2. Rush University Medical Center, Chicago, Illinois.
3. Weill Cornell Medical College, New York, New York.
4. University of Southern California, Los Angeles, California.
5. SUNY Downstate Medical Center, Brooklyn, New York.
6. Johns Hopkins University, Baltimore, Maryland.
7. Georgetown University Medical Center, Washington, District of Columbia.
8. University of California at San Francisco, San Francisco, California.