Munish Ashat, Sumant Arora, Arvind R Murali, Frederick C Johlin, Division of Gastroenterology and Hepatology, University of Iowa Hospital and Clinics, Iowa City, IA 52242, United States
Jagpal S Klair, Section of Gastroenterology, Seattle, WA 98111, United States
Christopher A Childs, Hardin Library University of Iowa Hospital and Clinics, Iowa City, IA 52242, United States
Author contributions: Ashat M designed the study, acquisition, and analyzation of the data and writing the manuscript; Arora S acquisition of data and analyzing the data; Klair JS manuscript preparation; Childs CA acquisition of data; Murali AR interpretation of data, revising the manuscript and final approval; Johlin FC interpretation of data, revising the manuscript and final approval.
Conflict-of-interest statement: No conflict of interest to declare. No financial support was received for the study.
Data sharing statement: No additional data is available.
PRISMA 2009 Checklist statement: This manuscript was prepared and revised according to the PRISMA 2009 checklist.
Open-Access: This is an open-access article that 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/
Corresponding author: Jagpal S Klair, MD, Doctor, Academic Fellow, The Section of Gastroenterology and the Digestive Disease Institute, Virginia Mason 1100 Ninth Avenue, Seattle, WA 98111, United States. email@example.com
Telephone: +1-504-6161210 Fax: +1-319-3848559
Received: March 23, 2019
Peer-review started: March 25, 2019
First decision: April 11, 2019
Revised: July 14, 2019
Accepted: August 7, 2019
Article in press: August 7, 2019
Published online: September 14, 2019