1. Mech-Sense, Department of Gastroenterology; Aalborg University; Aalborg Denmark
2. Department of Internal Medicine; Texas Tech University Health Sciences Center; El Paso Texas
3. Division of Digestive Diseases and Nutrition; University of Oklahoma Health Sciences Center; Oklahoma City Oklahoma
4. Fisiopatologia Digestiva; Nuovo Ospedale S. Agostino; Modena Italy
5. Division of Gastroenterology; Johns Hopkins University; Baltimore Maryland
6. Mayo College of Medicine; Mayo Clinic; Jacksonville Florida