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Nygaard, U. C.; Hansen, J. S.; Groeng, E.-C.; Melkild, I.; Løvik, M. . (2013). Suppression of Allergen-Specific IgE in Offspring After Preconceptional Immunisation: Maternal, Paternal and Genetic Influences. Scandinavian Journal of Immunology, 77(2), 92–103. doi:10.1111/sji.12017 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research