1 Center for Prevention and Diagnosis of Celiac Disease, Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
2 Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy.
3 Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy.
4 Center for Prevention and Diagnosis of Celiac Disease, Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. luca.elli@policlinico.mi.it.
5 Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy. luca.elli@policlinico.mi.it.