【正】GENERAL INFORMATION World Journal of Stem Cells(World J Stem Cells,WJSC,online ISSN 1948-0210,DOI:10.4252),is a monthly,open-access(OA),peer-reviewed journal supported by an editorial board of 284 experts in stem cell from 28 countries.The biggest advantage of the OA model is that it provides free, full-text articles in PDF and other formats for