1. Surveillance for Asthma—United States, 1980–1999;Mannino;MMWR CDC Surveill Summ,2002
2. Surveillance for Asthma—United States, 1960–1995;Mannino;MMWR CDC Surveill Summ,1998
3. The health economics of asthma and rhinitis, I: assessing the economic impact;Weiss;J Allergy Clin Immunol,2001
4. US Department of Health and Human Services. Healthcare Cost and Utilization Project. Available at: http://www.ahrq.gov/data/hcup/hcupnet.htm. Accessed March 28, 2002.
5. Intensive Care Units (ICUs): Clinical Outcomes, Costs and Decision-Making;Berenson,1984