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Custovic A, Simpson A, Woodcock A.Custovic A, et al. Among authors: simpson a.Allergy. 1998;53(48 Suppl):115-20. doi: 10.1111/j.1398-9995.1998.tb05011.x.Allergy. 1998.PMID: 10096822Review.
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Simpson A, Simpson B, Custovic A, Craven M, Woodcock A.Simpson A, et al. Among authors: simpson b.Clin Exp Allergy. 2003 Sep;33(9):1183-9. doi: 10.1046/j.1365-2745.2003.01679.x.Clin Exp Allergy. 2003.PMID: 12956752Clinical Trial.
Custovic A, Murray C, Simpson A.Custovic A, et al. Among authors: simpson a.Allergy. 2005;60 Suppl 79:10-3. doi: 10.1111/j.1398-9995.2005.00851.x.Allergy. 2005.PMID: 15842227Review.