1. Department of Gastroenterology Amsterdam University Medical Center Amsterdam the Netherlands
2. Division of Gastroenterology Department of Medicine National Jewish Health Denver CO USA
3. Division of Gastroenterology and Hepatology Department of Medicine Feinberg School of Medicine Northwestern University Chicago IL USA
4. College or Medicine & Public Health Flinders University Adelaide SA Australia
5. Division of Gastroenterology and Hepatology National Center for Global Health and Medicine Tokyo Japan
6. Division of Gastroenterology & Hepatology Center for Esophageal Diseases University of California San Diego La Jolla CA USA
7. Joy McCann Culverhouse Center for Esophageal Diseases University of South Florida College of Medicine Tampa FL USA
8. Esophageal and Swallowing Center Division of Gastroenterology and Hepatology Metrohealth Medical System Case Western Reserve University Cleveland OH USA