GOLD 2011 disease severity classification in COPDGene: A prospective cohort study

Mei Lan K. Han, Hana Muellerova, Douglas Curran-Everett, Mark T. Dransfield, George R. Washko, Elizabeth A. Regan, Russell P. Bowler, Terri H. Beaty, John E. Hokanson, David A. Lynch, Paul W. Jones, Antonio Anzueto, Fernando J. Martinez, James D. Crapo, Edwin K. Silverman, Barry J. Make