American Gastroenterological Association (Published by Elsevier) Posted on August 26, 2014 by SCG DR Copyright Holders: American Gastroenterological Association (Published by Elsevier) a Self-archiving policy Conditions Accepted version: √ 12 months embargo Published version: X a Remarks: The author is allowed to post the accepted manuscript on his/her institutional website, to be used for educational purposes only. The link below provides a detailed overview: http://www.elsevier.com/journal-authors/author-rights-and-responsibilities#author-posting (verified by Guang Ying via email) Verification Date: 13.08.2013