1. Purdue University, West Lafayette, IN;;
2. University of Virginia, Charlottesville, VA;;
3. University of Illinois College of Medicine, Chicago, IL;;
4. Harvard T.H. Chan School of Public Health, Boston, MA;;
5. The University of North Carolina at Chapel Hill, Chapel Hill, NC;;
6. Boston University, Boston, MA;;
7. University of South Florida, Tampa, FL;;
8. University of California Irvine, Irvine, CA