1. Swedish Medical Center, Seattle, Washington
2. Kansas City Veterans Affairs Medical Center, Kansas City, Missouri
3. University of Kansas Medical Center, Kansas City
4. Ochsner Clinic Foundation, New Orleans, Louisiana
5. St Luke’s Medical Center, Kansas City, Missouri
6. Department of Interdisciplinary Endoscopy, University Hospital Hamburg-Eppendorf, Hamburg, Germany
7. Instituto Clinico Humanitas, Department of Endoscopy, Humanitas University School of Medicine, Milano, Italy
8. Division of Gastrointestinal Endoscopy, University of São Paulo School of Medicine, São Paulo, Brazil