Bruton WN, et al: The impact of allergies and allergy treatment on worker productivity. J Occup Environ Med 43: 64-71, 2001.
Walker S, Khan-Wasti S, Fletcher M, et al:Seasonal allergic rhinitis is associated with a detrimental effect on examination performance in United Kingdom teenagers: Case-control study. J Allergy Clin Immunol 120: 381-387, 2007.