Author:Guiquan Jia, Richard W. Erickson, David F. Choy, Sofia Mosesova, Lawren C. Wu, Owen D. Solberg, Aarti Shikotra, Richard Carter, Séverine Audusseau, Qutayba Hamid, Peter Bradding, John V. Fahy, Prescott G. Woodruff, Jeffrey M. Harris, Joseph R. Arron, Bronchoscopic Exploratory Research Study of Biomarkers in Corticosteroid-refractory Asthma (BOBCAT) Study Group