1 Department of Medicine, Division of Gastroenterology and Hepatology, Jay Monahan Center for Gastrointestinal Health, Weill Cornell Medicine, New York, New York, USA.
2 Department of Medicine, University of Texas Southwestern Medical Center, Dallas VA Medical Center, Dallas, Texas, USA.
3 Gastroenterology and Hepatology, Dallas VA Medical Center, Dallas, Texas, USA.
4 Department of Medicine, Case Western Reserve University School of Medicine, Cleveland Louis Stokes VA Medical Center, Cleveland, Ohio, USA.
5 Division of Gastroenterology, Department of Medicine, University of California San Diego, La Jolla, California, USA.
6 Division of Gastroenterology, Baylor University Medical Center at Dallas, Dallas, Texas, USA.
7 Center for Esophageal Diseases, Baylor University Medical Center at Dallas, Dallas, Texas, USA.