1. Department of Medicine; University of Pittsburgh; Pittsburgh Pennsylvania
2. St. Mary's Hospital; Richmond Virginia
3. Department of Medicine; Saint Louis University; St. Louis Missouri
4. Department of Medicine; University of Alabama Birmingham; Birmingham Alabama
5. Department of Medicine; University of Michigan; Ann Arbor Michigan
6. Department of Medicine; Indiana University; Indianapolis Indiana
7. Department of Medicine; Dartmouth Hitchcock Medical Center; Lebanon New Hampshire
8. Department of Medicine; Mayo Clinic; Jacksonville Florida
9. GI Associates LLC; Aurora Health Care; St. Luke's Medical Center; Milwaukee Wisconsin
10. Department of Medicine; Griffin Hospital; Yale Affiliate; New Haven Connecticut
11. Department of Medicine; The Ohio State University; Columbus Ohio
12. Department of Medicine; Medical University of South Carolina; Charleston South Carolina
13. Department of Medicine; University of Florida; Gainesville Florida
14. Department of Medicine; Brigham and Women's Hospital; Boston Massachusetts
15. Department of Biostatistics; Graduate School of Public Health; University of Pittsburgh; Pittsburgh Pennsylvania
16. GastroHealth and Miami Cancer Institute; Baptist Hospital; Miami Florida