MMP7 and idiopathic pulmonary fibrosis: Higher levels of MMP7 in deceased IPF patients than survivorsPrediction of the risk of mortality by MMP7 levels higher than 12.1 ng/mL with a sensitivity of 71% and a specificity of 54%MMP7 levels higher than 12.1 ng/mL are an independent risk factor of mortalityThe association of high levels of MMP7 and SP-A associated with the risk of progression: 42% of patients with high levels of both biomarkers will progress (decrease of more than 10% of FVC), and only 9% of patients with low levels of both biomarkers will progress