1. Duke Clinical Research InstituteDurham NC
2. Miami VA Medical CenterMiami FL
3. Digestive Disease AssociatesBaltimore MD
4. Liver Institute of Virginia, Bon Secours Health System, Richmond and Newport News VA
5. Fayetteville Gastroenterology Associates, Cumberland Research AssociatesFayetteville NC
6. Johns Hopkins University School of MedicineBaltimore MD
7. Atlanta Gastroenterology AssociatesAtlanta GA
8. Emory UniversityAtlanta GA
9. Gilead Sciences, Inc.Foster City CA
10. Howard UniversityWashington DC
11. Swedish Medical CenterSeattle WA
12. Beth Israel Deaconess Medical CenterBoston MA
13. University of Pennsylvania School of MedicinePhiladelphia PA