N Engl J Med 2015 Mar;372(12):1104-13
From the Department of Systems Medicine, University of Tor Vergata (G.M., M.C.F., S.O., L.B., F.P.), Gastroenterology Unit-Azienda Ospedaliera San Camillo-Forlanini (M.L.S.), Inflammatory Bowel Disease Unit, Complesso Integrato Columbus, Catholic University (A.A.), and Inflammatory Bowel Disease Unit, Department of Internal Medicine, Division of Gastroenterology, Sandro Pertini Hospital Rome (R.P.), Rome, Department of Surgery, L. Sacco University Hospital (S.A., M.F.), Department of Pathophysiology and Transplantation, University of Milan and Ospedale Policlinico di Milano (F. Caprioli), and Department of Biomedical Sciences for Health, University of Milan, and Gastroenterology Unit, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Policlinico San Donato, San Donato Milanese (M.V.), Milan, First Department of Internal Medicine, St. Matteo Hospital Foundation, University of Pavia, Pavia (A.D.S., G.R.C.), Gastroenterologia, Università Federico II di Napoli, Naples (F. Castiglione), Dipartimento di Scienze Chirurgiche Oncologiche e Gastroenterologiche-Unita' Operativa di Gastroenterologia-Universita' degli Studi di Padova, Padua (G.C.S.), Department of Medical and Surgical Specialties, Gastroenterology SOD2, Azienda Ospedaliero Universitaria Careggi, Florence (F.R.), Division of Gastroenterology, Casa Sollievo Sofferenza Hospital, IRCCS, San Giovanni Rotondo (F.B.), Department of Internal Medicine, Gastroenterology and Hepatology Unit, University of Genoa, Genoa (V.S.), and the Division of Internal Medicine Villa Sofia-Cervello Hospital, University of Palermo, Palermo (A.O.) - all in Italy; and the Department of Medicine, Medical Clinic 1, University of Erlangen-Nürnberg, Erlangen, Germany (M.F.N., R.A.).