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American College of Allergy, Asthma & Immunology web site.
American Kennel Club web site.
Heutelbeck, A. Journal of Toxicology & Environmental Health, 2008.
Hodson, T. Journal of Allergy and Clinical Immunology, April 1999.
Lipton, L. Psychiatric News, Feb. 2, 2001.
Merck Veterinary Manual web site.
Reviewed by Amy Flowers, DVM on May 28, 2020
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