Ying An, Ya Wang, Shuang Wu, You-Hua Wang, Xing Qian, Yong Xie, Department of Gastroenterology, the First Affiliated Hospital of Nanchang University, Key Laboratory of Digestive Diseases of Jiangxi, Nanchang 330000, Jiangxi province, China
Ying An, Ya Wang, Ying-Jun Fu, School of Pharmacy, Nanchang University, Nanchang 330000, Jiangxi province, China
Zhen Li, Medical College, Nanchang University, Nanchang 330000, Jiangxi province, China
Author contributions: Fu YJ and Xie Y designed the research; An Y, Wang Y, and Wu S performed the research; Wang YH, Qian X, and Li Z contributed to analytic tools; An Y and Wang Y analyzed data; An Y and Wang Y wrote the paper.
Supported by the Graduate Innovation Project of Nanchang University, No. CX2017213 and No. CX2017251; the National Natural Science Foundation of China, No. 81460115; and the Science and Technology Projects of Jiangxi Province, No. 2014BBG70019.
Conflict-of-interest statement: The authors deny any conflict of interest.
PRISMA 2009 Checklist statement: The authors have read the PRISMA 2009 Checklist, and the manuscript was prepared and revised according to the PRISMA 2009 Checklist.
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: Yong Xie, MD, PhD, Professor, Department of Gastroenterology, the First Affiliated Hospital of Nanchang University, Key Laboratory of Digestive Diseases of Jiangxi, Nanchang 330000, Jiangxi Province, China. email@example.com
Received: April 4, 2018
Peer-review started: April 4, 2018
First decision: April 19, 2018
Revised: May 12, 2018
Accepted: June 16, 2018
Article in press: June 16, 2018
Published online: August 7, 2018