Qiu-Shi Liao, Qian Du, Jun Lou, Jing-Yu Xu, Rui Xie, Department of Gastroenterology, Affiliated Hospital to Zunyi Medical College, Zunyi 563000, Guizhou Province, China
Author contributions: Liao QS and Du Q equally contributed to this study, and wrote the manuscript; Liao QS, Du Q, and Lou J participated in information collection, analysis, and organization; Xu JY primarily revised and finalized the manuscript; Xie R revised the manuscript for clarity and style; Xu JY and Xie R are the co-corresponding authors.
Supported by the National Natural Science Foundation of China, No. 816660412 to Xie R and No. 81160265 to Xu JY.
Conflict-of-interest statement: Authors declare no conflict of interests for this article.
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/
Corresponding author: Rui Xie, MD, PhD, Professor, Department of Gastroenterology, Affiliated Hospital to Zunyi Medical College, No. 149, Dalian Road, Huichuan District, Zunyi 563000, Guizhou Province, China. firstname.lastname@example.org
Telephone: +86-15120390646 Fax: +86-851-28609205
Received: November 21, 2018
Peer-review started: November 22, 2018
First decision: December 12, 2018
Revised: December 20, 2018
Accepted: December 27, 2018
Article in press: December 27, 2018
Published online: January 21, 2019