5Chung KF, Wenzel SE, Brozek JL, et al. International ERS/ATS guidelines on definition, evaluation and treatment of severe asthma [J]. Eur Respir J, 2014,43(3) :343-373.
6Bakakos P, Schleich F, Alchanatis M, et al. Induced sputum in asthma:from bench to bedside [J]. Curr Med chem, 2011,18 (10) : 1415-1422.
7Simpson JL, Scott R, Boyle MJ, et al. Innammatory subtypes in asthma:Assessment and identification using induced sputum [ J ]. Respirology,2006,11 ( 1 ) :54-61.
8Saraiva-Romanholo BM, Saraiva BM, Barnabe V, et al. Comparison of three methods for differential cell count in Induced sputum [ J ]. Chest,2003,124 ( 3 ) : 1060-1066.
9American Thoracic Society, European Respiratory Society. ATS/ ERS recommendations for standardized procedures for the online and offline measurement of exhaled lower respiratory nitric oxide and nasal nitric oxide, 2005 [ J ]. Am J Respir Crit Care Med, 2005,171 (8) : 912-930.
10Amelink M, de Groot JC, de Nijs SB, et al. Severe adult-onset asthma: A distinct phenotype[ J]. J Allergy Clin Immunol, 2013, 132(2) :336-341.
