Christopher J Danford, Steven C Lin, Jacqueline L Wolf, Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, United States
Martin P Smith, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, United States
Author contributions: Danford CJ and Lin SC contributed equally in performing the literature search, review, and drafting of the manuscript, and they should be as co-first authors; Danford CJ, Lin SC, Smith MP and Wolf JL participated in the critical review, revision of the manuscript, and approve of the final draft of the manuscript.
Conflict-of-interest statement: There are no financial disclosures or conflicts of interest in the production of this manuscript.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Jacqueline L Wolf, MD, Associate Professor, Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Rabb 433, Boston, MA 02115, United States. email@example.com
Telephone: +1-617-6671676 Fax: +1-617-6675826
Received: May 16, 2018
Peer-review started: May 17, 2018
First decision: May 30, 2018
Revised: June 7, 2018
Accepted: June 25, 2018
Article in press: June 25, 2018
Published online: July 28, 2018