1. Vital signs: asthma prevalence, disease characteristics, and self-management education: United States, 2001–2009;MMWR Morb Mortal Wkly Rep,2011
2. American College of Allergy, Asthma & Immunology (ACAAI). Who has asthma and why? Available at http://www.acaai.org/allergist/asthma/Pages/what_causes_asthma.aspx. Accessed October 2011.
3. National Asthma Education and Prevention Program (NAEPP) expert panel report 3: guidelines for the diagnosis and management of asthma;J Allergy Clin Immunol,2007
4. Medical therapy for asthma: updates from the NAEPP guidelines;Elward;Am Fam Physician,2010
5. Prescription patterns for asthma medications in children and adolescents with health care insurance in the United States;Arellano;Pediatr Allergy Immunol,2011