1. American Academy of Allergy Asthma & Immunology. The allergy report, volume I: overview of allergic diseases: diagnosis, management, and barriers to care. Milwaukee, WI: AAAAI; 2000.
2. Allergic rhinitis;Fireman,1991
3. Costs of hay fever in the United States in 1990;McMenamin;Ann Allergy,1994
4. Centers for Disease Control and Prevention: National Center for Health Statistics: National Ambulatory Medical Care Survey: 2004 summary. Accessed August 11, 2008, [http://www.cdc.gov/nchs/data/ad/ad374.pdf]
5. The health and economic impact of rhinitis;Rossoff;Am J Manag Care,1997