R. Graham Barr

Elevated circulating MMP-9 is linked to increased COPD exacerbation risk in SPIROMICS and COPDGene.

J. Curtis, R. Bowler, V. Kim, 2018, JCI insight.

Cardiovascular Disease is Associated with COPD Severity and Reduced Functional Status and Quality of Life

E. Regan, D. Lynch, J. Hokanson, 2014, COPD.