1. Internal Medicine and Liver Unit, Department of Experimental and Clinical Medicine, Careggi University Hospital, Florence, Italy
2. Psychiatry Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
3. Functional Mental Health Unit of Adults-Northwest Tuscany Local Health Unit of Pisa, Pisa, Italy
4. Gastrointestinal Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy