1. Malm L, Gerth van Wijk R, Bachert C: Guidelines for nasal provocations with aspects on nasal patency, airflow, and airflow resistance. International Committee on Objective Assessment of the Nasal Airways, International Rhinologic Society. Rhinology 2000, 38:1–6. This paper gives the most recent international assessment of nasal provocation test and its evaluation.
2. Okuda M: Grading the severity of allergic rhinitis for treatment strategy and drug study purposes. Curr Allergy Asthma Rep 2001, 1:235–241. Detailed analyses of different grading systems for symptoms of allergic rhinitis, based on the last guidelines of WHO, FDA, EAACI, and the Japanese System, that helps to understand evaluation of clinical symptoms for positive or negative response in NPT.
3. Naclerio RM, Norman PS: In vivo methods for the study of allergic rhinitis. Mucosal tests, techniques, and interpretations. In Allergy: Principles and Practice, edn. 5. Edited by Middleton, E. St Louis: Mosby; 1998:440–453.
4. Bachert C: Nasal provocation test: critical evaluation. In New Trends in Allergy IV. Edited by Ring J, Behrendt HD. Berlin: Springer-Verlag; 1997:277–280. Good source of information for practitioners on performing NPT with allergen.
5. Holopainen E, Tarkiainen E, Malmberg H: Nasal challenge. Rhinology 1976, 14:181–188.