1. Division of Gastroenterology and Hepatology; Mayo Clinic; Phoenix AZ
2. Texas Tech University Health Sciences Center; Amarillo TX
3. Division of Gastroenterology, Department of Medicine; Olive View-UCLA Medical Center; Sylmar CA
4. Division of Gastroenterology and Hepatology; Mayo Clinic; Rochester MN
5. Department of Internal Medicine; Mayo Clinic; Rochester MN
6. Division of Biomedical Statistics and Informatics; Mayo Clinic; Rochester MN
7. Division of Oncology; Mayo Clinic; Scottsdale AZ
8. Section of Digestive Diseases; Yale School of Medicine; New Haven CT
9. Arizona State University; Phoenix AZ