1. Current estimates from the National Health Interview Survey, 1996. (Vital and Health Statistics, Series 10: Data from the National Health Interview Survey, No. 200) (DHHS publication no. (PHS) 99-1528) (GPO no 017-01471-8);Adams,1999
2. Agency for Healthcare Research and Quality. (n.d.). Medical Expenditure Panel Survey (MEPS). Retrieved February 8, 2006, from http://www.ahrq.gov/data/mepsweb.htm
3. Agency for Healthcare Research and Quality. (2001). MEPS HC-010A: 1996 Prescribed Medicines. Retrieved March 3, 2004, from http://www.meps.ahrq.go,v/Pubdoc/HC010a/HC10ADoc.htm
4. Trends in childhood asthma prevalence, health care utilization, and mortality;Akinbami;Pediatrics,2002
5. US childhood asthma prevalence estimates: The impact of the 1997 National Health Interview Survey redesign;Akinbami;American Journal of Epidemiology,2003