Serum Immunoglobulin G Levels Are Associated with Risk for Exacerbations: An Analysis of SPIROMICS.

Burnim M, Putcha N, LaFon D, Woo H, Azar A, Groenke L, Stampfli M, Schaub A, Fawzy A, Balasubramanian A, Fedarko N, Cooper CB, Bowler RP, Comellas A, Krishnan JA, Han MK, Couper D, Peters SP, Drummond MB, O'Neal W, Paine R, Criner G, Martinez FJ, Curtis JL, Barr G, Huang YJ, Woodruff P, Dransfield M, Hansel NN