1. Current estimates from the National Health Interview Survey, 1996;Adams;Vital Health Stat,1999
2. National Ambulatory Medical Care Survey: 1999 summary;Cherry;Adv Data Vital Health Stat,2001
3. Costs of hay fever in the United States in 1990;McMenamin;Ann Allergy,1994
4. A cost of illness study of allergic rhinitis in the United States;Malone;J Allergy Clin Immunol,1997
5. The economic impact of allergic rhinitis;Storms;J Allergy Clin Immunol,1997