Relationship of asthma management, socioeconomic status, and medication insurance characteristics to exacerbation frequency in children with asthma
Ungar WJ, Paterson JM, Gomes T, Bikangaga P, Gold M, To T, Kozyrskyj AL. Ann Allergy Asthma Immunol. 2011; 106(1):17-23. Epub 2010 Nov 20.