Zhou Wei, Zhou Xin, Liu Jin-qiang, Zhang Yu-jie, Hong Liu, High expression of miR-21 in tissue correlated with the poor survival of patients with esophageal cancer: a pilot study using the meta-analysis, Journal Of Preventive Medicine And Care, Volume 1, Issue 1, 2016, Pages 9-15, ISSN 2474-3585, https://doi.org/10.14302/issn.2474-3585.jpmc-15-757. (https://openaccesspub.orgjpmc/article/255) Keywords: esophagea cancer; miR-21; survival.