Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association 2008 https://researcherprofiles.org/profile/1459242 18258490 Stoffel EM, Ford B, Mercado RC, Punglia D, Kohlmann W, Conrad P, Blanco A, Shannon KM, Powell M, Gruber SB, Terdiman J, Chung DC, Syngal S