1. Unit of Gastroenterology and Digestive Endoscopy AUSL Bologna Bellaria‐Maggiore Hospital Italy
2. Medical Pathology Department of Internal Medicine, Gastroenterology Division Policlinico Universitario A. Gemelli Catholic University of Sacred Heart Rome Italy
3. Anatomic Pathology Unit AUSL of Bologna Maggiore Hospital Italy
4. Department of Pharmacy and Biotechnology (FaBiT) University of Bologna Italy
5. Department of Medicine (DIMES) Molecular Diagnostic Unit AUSL of Bologna University of Bologna School of Medicine Italy
6. Department of Medicine Anatomic Pathology University of Padua Padova Italy
7. Internal Medicine Unit Maggiore Hospital Bologna Italy