1. European Allergy White Paper. UCB Institute, London.
2. The National Allergy Bureau. American Academy of Allergy, Asthma and Immunology. http://www.aaaai.org.
3. VisionTrak data, Taylor Nelson Sofres, September 2002.
4. The allergy report, vol 1. Overview of allergic diseases. American Academy of Allergy, Asthma and Immunology. http://www.aaaai.org.
5. Seasonal allergy relief with daily disposable lenses;Stiegemeier;Contact Lens Spectrum,2001