1Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA;

2Division of Gastroenterology, Mayo Clinic, Rochester, Minnesota, USA;

3Division of Gastroenterology, Yale University School of Medicine, New Haven, Connecticut, USA.

Correspondence: Jessica R. Allegretti, MD, MPH, FACG. E-mail: [email protected].