NT-proBNP in stable COPD and future exacerbation risk: Analysis of the SPIROMICS cohort.

Labaki WW, Xia M, Murray S, Curtis JL, Barr RG, Bhatt SP, Bleecker ER, Hansel NN, Cooper CB, Dransfield MT, Wells JM, Hoffman EA, Kanner RE, Paine R, Ortega VE, Peters SP, Krishnan JA, Bowler RP, Couper DJ, Woodruff PG, Martinez FJ, Martinez CH, Han MK