U.S.Department of Health and Human Services. Food and Drug Administration, Center for Drug Evaluation and Research. Allergic Rhinitis : Clinical Development Programs for Drug Products. DRAFT GUIDANCE. April 2000.
European Medicines Agency. Guideline on the clinical development of medical products for the treatment of allergic rhino-conjunctivitis. October 2004.
Connel JT : Quantitative intranasal pollen challenges. 3. The priming effects in allergic rhinitis. J Allergy 43 : 33-44, 1969.
Fontana VJ, Indyk L, Znajanian M : Ragweed pollen challenges in a controlled environment. J Allergy Clin Immunol 54 : 235-243, 1974.