1. Division of Internal Medicine, University of Toronto, Toronto, Ontario, Canada;
2. Office of Clinical Research, Baptist Health South Florida, Miami, Florida, USA;
3. Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, USA;
4. Research Department, Universidad Espíritu Santo, Samborondon, Ecuador;
5. Division of Gastroenterology, Kingston Health Sciences Centre, Queen's University, Kingston General Hospital, Kingston, Ontario, Canada;
6. Department of Gastroenterology and Hepatology, New York City Health and Hospitals Metropolitan/New York Medical College, New York, New York, USA;
7. Division of Internal Medicine, St. Luke's Hospital, Chesterfield, Missouri, USA;
8. Division of Internal Medicine, Midwestern University, Verde Valley Internal Medicine Program, Cottonwood, Arizona, USA;
9. Division of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, Florida, USA.