Department of Gastroenterology;
University College Hospital;
London NW1 2PG;
United Kingdom;
Division of Human Nutrition;
University of Tor Vergata;
Department of Gastroenterology and Laboratory of Molecular Gastroenterology;
Humanitas Clinical and Research Center;
Baylor Health Care System;
Institute for Health Care Research and Improvement;
Department of Internal Medicine;
Gemelli Hospital;
Catholic University of Rome;