1
Harvard University
2
Massachusetts Institute of Technology
3
Stanford University
4
University of California--Berkeley
5
Washington University in St. Louis
6
Baylor College of Medicine
6
Johns Hopkins University
6
Yale University
9
University of Wisconsin--Madison
10
Columbia University
10
Cornell University
10
Duke University
10
University of California--San Diego
10
University of California--San Francisco
10
University of Washington
16
California Institute of Technology
16
Princeton University
16
University of Pennsylvania