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Karlsson, M R; Johansen, F-E; Kahu, H; Macpherson, A; Brandtzaeg, P (2010). Hypersensitivity and oral tolerance in the absence of a secretory immune system. Allergy, 65(5), pp. 561-70. Oxford: Wiley-Blackwell 10.1111/j.1398-9995.2009.02225.x
