Association of Matrix Metalloproteinase 9 (<i>MMP-9</i>) Polymorphisms with Asthma Risk: A Meta-Analysis

<div>The flow diagram of inclusion of studies in meta-analysis.</div>

Canadian Respiratory Journal

Figure 1: Association of Matrix Metalloproteinase 9 (<i>MMP-9</i>) Polymorphisms with Asthma Risk: A Meta-Analysis 