1. 1. Centers for Disease Control and Prevention . Asthma prevalence, healthcare use, and mortality . 2002 . Available athttp://www.cdc.gov/nchs/products/pubs/pubd/hestats/asthma/asthma.htm. Accessed May 2, 2006.
2. 2. DM Mannino, DM Homa, LJ Akinbami, JE Moorman, C Gwynn, and S Redd . Surveillance for Asthma-United States, 1980-1999. Surveillance summaries, March 29, 2002 . 2002 ;51 (no. SS-1 ):1 -13 . Available at: http://www.cdc.gov/mmwr/preview/mmwrhtml/ss5101a1.htm. Accessed May 2, 2006.
3. Recent trends in the prevalence and severity of childhood asthma
4. Trends in Childhood Asthma: Prevalence, Health Care Utilization, and Mortality
5. Risk Factors for Pediatric Asthma