Allergic disease and sensitization in Steiner school children. Floistrup H, Swartz J, Bergstrom A, Alm JS, Scheynius A, van Hage M, Waser M, Braun-Fahrlander C, Schram-Bijkerk D, Huber M, et al. J Allergy Clin Immunol 2006;117(1):59-66.

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Bacterial and fungal agents in house dust and wheeze in children: the PARSIFAL study. Schram-Bijkerk D, Doekes G, Douwes J, Boeve M, Riedler J, Ublagger E, von Mutius E, Benz MR, Pershagen G, van Hage M, et al. Clin Exp Allergy 2005;35(10):1272-1278.

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Bacterial and fungal components in house dust of farm children, Rudolf Steiner school children and reference children--the PARSIFAL Study.Schram D, Doekes G, Boeve M, Douwes J, Riedler J, Ublagger E, von Mutius E, Budde J, Pershagen G, Nyberg F, et al. Allergy 2005;60(5):611-618. 

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An anthroposophic lifestyle and intestinal microflora in infancy. Alm JS, Swartz J, Bjorksten B, Engstrand L, Engstrom J, Kuhn I, Lilja G, Mollby R, Norin, E, Pershagen G, Reinders C, Wreiber K, Scheynius A . Pediatr Allergy Immunol 2002;13(6) :402-11.

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Atopy in children of families with an anthroposophic lifestyle. Alm JS, Swartz j, Lilja G, Scheynius A, Pershagen G . Lancet 1999;353(9163) :1485-8.