8Eisner MD, Anthonisen N, Coultas D, et al. An official American Thoracic Society public policy statement: Novel risk factors and the global burden of chronic obstructive pulmonary disease[J]. Am J Respir Crit Care Med,2010,182(5) :693.
9http://www, who. int/respiratory/asthma/en/[OL].
10Cosmi L, Liotta F, Maggi E, et al. Th17 cells :new players in asthma pathogenesis [J]. Allergy,2011,66 (8) : 989.