American Journal of Gastroenterology American Journal of Gastroenterology, Nature Publishing Group: Open Access Hybrid Model Option A, 2012, 107 ((12)), pp.1770-6. ⟨10.1038/ajg.2012.117⟩ American journal of gastroenterology, 107(12), 1770-1776. Springer Nature The American Journal of Gastroenterology The American Journal of Gastroenterology, 2012, 107 ((12)), pp.1770-6. ⟨10.1038/ajg.2012.117⟩