Universitätsklinikum Halle (Saale), Halle (Saale), Germany
GIRI (GI Research Institute), Vancouver, British Columbia, Canada
Hôtel-Dieu de Lévis,, Lévis, Quebec, Canada
Division of Gastroenterology, Department of Medicine, Faculty of Medicine University of Alberta,, Edmonton, Alberta, Canada
Beth israel Deaconess Medical Center, Boston, Massachusetts, United States
Gastro Health, Miami, Florida, United States
Stanford Center for Clinical & Translational Research & Education, Palo Alto, California, United States