1 Division of Gastroenterology, Azienda Ospedaliero-Universitaria Policlinico di Modena, University of Modena and Reggio Emilia, Modena, Italy.
2 Leonard D. Schaeffer Center, University of Southern California, Los Angeles, CA, USA.
3 Center for Global Health, Istituto Superiore di Sanità, Rome, Italy.
4 Department of Clinical Medicine, University of Rome 'La Sapienza', Rome, Italy.
5 Division of Gastroenterology, University of Turin, Turin, Italy.
6 Department of Clinical Medicine and Surgery, Gastroenterology Unit, University of Naples 'Federico II', Naples, Italy.
7 Clinical Pathology-Toxicology, Ospedale S Agostino-Estense, Modena, Italy.
8 Obstetrics and Gynecology, Azienda Ospedaliero-Universitaria Policlinico di Modena, University of Modena and Reggio Emilia, Modena, Italy.
9 AbbVie Inc., North Chicago, IL, USA.
10 Humanitas University and Humanitas Research Hospital Rozzano, Milan, Italy.
11 Division of Gastroenterology, Azienda Ospedaliero-Universitaria Policlinico di Modena, University of Modena and Reggio Emilia, Modena, Italy. Electronic address: [email protected].