1. CDC surveillance summaries: surveillance for asthma-United States, 1960–1995;Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,1998
2. Expert panel report: guidelines for the diagnosis and management of asthma;National Asthma Education and Prevention Program,1991
3. Expert panel report 2: guidelines for the diagnosis and management of asthma;National Asthma Education and Prevention Program,1997
4. Expert panel report: guidelines for the diagnosis and management of asthma; update on selected topics 2002;National Asthma Education and Prevention Program;J Allergy Clin Immunol,2002
5. Barriers pediatricians face when using asthma practice guidelines;Cabana;Arch Pediatr Adolesc Med,2000