摘要
GENERAL INFORMATION World Journal of Gastroenterology (World J Gastroenterol ISSN 1007-9327 CN 14-1219/R) is a weekly open-access (OA) peer-reviewed journal supported by an editorial board consisting of 1179 experts in gastroenterology and hepatology from 60 countries. The biggest advantage of the OA model is that it provides free, full-
