摘要
GENERAL INFORMATION World Journal of Gastroenterology(World J Gastroenterol,WJG,print ISSN 1007-9327,DOI:10.3748)is a weekly,open-access(OA), peer-reviewed journal supported by an editorial board of 1096 experts in gastroenterology and hepatology from 60 countries. The biggest advantage of the OA model is that it provides free,
