1. Jaeb Center for Health Research, Tampa, Florida.
2. State University of New York Upstate Medical University, Syracuse, New York.
3. Keck School of Medicine of the University of Southern California, Los Angeles, California.
4. Northwestern University, Chicago, Illinois.
5. International Diabetes Center Park Nicollet, Minneapolis, Minnesota.
6. University of South Florida, Tampa, Florida.
7. University of North Carolina, Chapel Hill, North Carolina.
8. University of Washington, Seattle, Washington.