1. Gastroenterology Unit, Hospital of Imola, Department of Medical and Surgical Sciences – DIMEC, University of Bologna, Italy
2. Anniston digestive health, Anniston, Alabama, United States
3. Department of Internal Medicine 2, Caritas Krankenhaus, Bad Mergentheim, Germany
4. Department of Internal Medicine, Krankenhaus Märkisch Oderland Strausberg/Wriezen; Brandenburg Institute of Clinical Ultrasound, Medical University Brandenburg, Neuruppin, Germany
5. Department of Gastroenterology, Research Center of Gastroenterology and Hepatology, University of Medicine and Pharmacy of Craiova, Craiova, Romania
6. Department of General and Specialist Medicine, Gastroenterologia-U, Città della Salute e della Scienza di Torino, Turin, Italy
7. Center for Interventional Endoscopy, AdventHealth Orlando, Orlando, Florida, USA.
8. Digestive Endoscopy Unit, Hopital Privé J Mermoz Ramsay Générale de Santé, Lyon, France