Differentially expressed microRNAs between patients and control groups. The diagram shows the fold changes of miRNAs that passed the filtering criteria using SAM software between the two groups in the analysis. FDR lower than 0.05 and fold change higher than 1.5 was set as standard. Up-regulated and down-regulated miRNAs are indicated by bars above and below the horizontal axis respectively. The q-values are indicated above the bars.