1. University of FloridaGainesville FL
2. Inova Fairfax HospitalFalls Church VA
3. Quest Clinical ResearchSan Francisco CA
4. Texas Liver Institute, University of Texas Health Science CenterSan Antonio TX
5. Scripps ClinicLa Jolla CA
6. Atlanta Gastroenterology AssociatesAtlanta GA
7. Kansas City Research InstituteKansas City MO
8. Gastro OneGermantown TN
9. Asheville Gastroenterology AssociatesAsheville NC
10. Texas Clinical Research InstituteArlington TX
11. Midland Florida Clinical Research CenterDeLand FL
12. Mercy Medical CenterBaltimore MD
13. Fundación de Investigación de DiegoSanturce Puerto Rico
14. University of PittsburghPittsburgh PA
15. Hofstra North Shore–Long Island Jewish School of MedicineManhasset NY
16. Medical Associates Research GroupSan Diego CA
17. Southwest CARE CenterSanta Fe NM
18. Digestive Disease AssociatesBaltimoreMD
19. Gastrointestinal Specialists of GeorgiaMarietta GA
20. Premier Medical Group of Hudson ValleyPoughkeepsie NY
21. Digestive Disease Institute, Virginia Mason Medical CenterSeattle WA
22. Bristol‐Myers Squibb Research and DevelopmentBraine‐l'Alleud Belgium
23. Bristol‐Myers Squibb Research and DevelopmentWallingford CT
24. Bristol‐Myers Squibb Research and DevelopmentPrinceton NJ