1. Lexicon Pharmaceuticals, Inc., The Woodlands, TX
2. Dallas Diabetes and Endocrine Center, Dallas, TX
3. Atlanta Diabetes Associates, Atlanta, GA
4. University of Colorado Denver/Barbara Davis Center for Childhood Diabetes, Aurora, CO
5. University of North Carolina School of Medicine, Chapel Hill, NC
6. Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY
7. Creighton Diabetes Center, Omaha, NE
8. Pennington Biomedical Research Center, Baton Rouge, LA