1. Centers for Disease Control and Prevention: 2009 Behavioral Risk Factor Surveillance System Data. Table C1, Adult self-reported current asthma prevalence rate (percent) and prevalence (number) by state or territory. 2010, Available at: http://www.cdc.gov/asthma/brfss/09/current/tableC1.htm Accessed May 5, 2011
2. Centers for Disease Control and Prevention: 2000 Behavioral Risk Factor Surveillance System Data. Table C1, Adult self-reported current asthma prevalence rate (percent) and prevalence (number) by state. 2010, Available at: http://www.cdc.gov/asthma/brfss/00/current/tableC1.htm Accessed May 5, 2011
3. Centers for Disease Control and Prevention: National Health Interview Survey. About the National Health Interview Survey. 2011, Available at: http://www.cdc.gov/nchs/nhis/about_nhis.htm Accessed July 13, 2011
4. Centers for Disease Control and Prevention: Behavioral Risk Factor Surveillance System (BRFSS) Prevalence Data. Background Information. 2011, Available at: http://www.cdc.gov/asthma/brfss/default.htm Accessed July 13, 2011
5. Centers for Disease Control and Prevention: 2001 National Health Interview Survey Data. Table 4–1, Current asthma prevalence by age, United States. 2010, Available at: http://www.cdc.gov/asthma/nhis/01/data.htm Accessed December 22, 2010