1. Centers for Disease Control and Prevention. Asthma. 2012. http://www.cdc.gov/nchs/fastats/asthma.htm. Accessed April 13, 2014.
2. Trends in asthma prevalence, health care use, and mortality in the United States, 2001–2010;Akinbami;NCHS Data Brief,2012
3. Costs of asthma in the United States: 2002–2007;Barnett;J Allergy Clin Immunol,2011
4. Healthy People 2020,2013
5. Expert Panel Report 3: Guidelines for the Diagnosis and Management of Asthma: Full Report 2007. NIH Publication No 07–4051,2007