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Clementsen P, Milman N, Struve-Christensen E, Petersen BN, Pedersen M, Bisgaard H, Permin H, Norn S.Clementsen P, et al. Among authors: bisgaard h.Allergy. 1991 Jan;46(1):45-51. doi: 10.1111/j.1398-9995.1991.tb00542.x.Allergy. 1991.PMID: 1708212