1. American Cancer Society, Kennesaw, GA, USA
2. Hennepin Healthcare, Minneapolis, MN, USA
3. Yale University, New Haven, CT, USA
4. University of California–Merced, Merced, CA, USA
5. Duke University, Durham, NC, USA
6. Columbia University, New York, NY, USA
7. University of California–San Francisco, San Francisco, CA, USA
8. University of California–Irvine, Irvine, CA, USA