Unraveling the Role of Cell-free DNA as a Biomarker in Chronic Obstructive Pulmonary Disease (COPD) Exacerbations.

M.E. Richert, H. Kong, M.K. Jang, X. Tian, S. Gao, M. Keller, T. Andargie, L.A. Bateman, E.R. Bleecker, R.P. Bowler, S.A. Christenson, D.A. Meyers, W.K. O'Neal, V.E. Ortega, P. Woodruff, F.J. Martinez, J.L. Curtis, SPIROMICS Investigators, S. Agbor-Enoh