Medical Department;
Desio Hospital;
Gastroenterology and Gastrointestinal Endoscopy Unit;
IRCCS Policlinico San Donato;
20097 San Donato Milanese;
Italy;
Gastroenterology Section;
Department of Medicine;
University of Perugia Medical School;
Department of Biomedical Sciences for the Health;
University of Milan;
Institute of Pathology;
Spedali Civili;
25123 Brescia;
Italy;