1. Taussig L, Landau LI. Pediatric respiratory medicine. 2nd ed. Philadelphia: Elsevier Health Sciences; 2008.
2. Akinbami LJ. The state of childhood asthma, United States, 1980–2005. National Center for Health Statistics, Hyatsville; 2006. Report no.: 24.
3. CDC. Vital signs: asthma prevalence, disease characteristics, and self-management education - United States, 2001–2009. MMWR Morb Mortal Wkly Rep. 2011;60(17):547–52.
4. Moorman JE, Rudd RA, Johnson CA, King M, Minor P, Bailey C, et al. National surveillance for asthma – United States, 1980–2004. Morb Mortal Wkly Rep Surveill Summ. 2007;56(8):18–54.
5. Ramsey F, Ussery-Hall A, Garcia D, McDonald GJ, Easton A, Kambon M, et al. Prevalence of selected risk behaviors and chronic diseases – behavioral risk factor surveillance system (BRFSS), 39 steps communities, United States, 2005. MMWR Morb Mortal Wkly Rep [Internet] 2008 [cited 8/4/2010]; 57(SS11):8/04/2010.