Figure 1From: Candidate microRNA biomarkers of pancreatic ductal adenocarcinoma: meta-analysis, experimental validation and clinical significancePRISMA 2009 flow chart. Only original experimental articles that were published in English and that analysed the differences in miRNA expression between PDAC tissue and noncancerous pancreatic tissue in humans were included. Articles were excluded if the studies did not use a miRNA microarray platform or if they profiled miRNAs in different histological subtypes.Back to article page