Clinical phenotypes of atopy and asthma in COPD: a meta-analysis of SPIROMICS and COPDGene.

Putcha N, Fawzy A, Matsui EC, Liu M, Bowler RP, Woodruff P, O'Neal WK, Comellas AP, Han MK, Dransfield M, Wells JM, Lugogo N, Gao L, Talbot CC, Hoffman E, Cooper CB, Paulin LM, Kanner RE, Criner G, Ortega VE, Barr RG, Krishnan JA, Martinez FJ, Drummond MB, Wise RA, Diette GB, Hersh CP, Hansel NN