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Survival analysis for MMP3 and MMP9 genotypes. (A) Overall and (B) disease-free survival for MMP3 genotypes. (C) Overall and (D) disease-free survival for MMP9 genotypes. Kaplan-Meier analysis was used to study the associations between the MMP3 and MMP9 genotypes and disease-free and overall survival rates. MMP, matrix metalloproteinase.
