8.
Moore WC, Bleecker ER, Curran-Everett D, et al, for the National Heart, Lung, and Blood Institute’s Severe Asthma Research Program. Characterization of the severe asthma phenotype by the National Heart, Lung, and Blood Institute’s Severe Asthma Research Program. J Allergy Clin Immunol 2007; 119:405- 413.