1
Harvard University
2
Massachusetts Institute of Technology
3
California Institute of Technology
3
Johns Hopkins University
3
Stanford University
6
University of California--Berkeley
7
Yale University
8
Princeton University
8
Rockefeller University
10
Cold Spring Harbor Laboratory
10
University of California--San Francisco
12
Duke University
12
University of California--Los Angeles
12
University of California--San Diego
15
Columbia University
15
Cornell University, Weill Graduate School of Medical Sciences