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Clark AT, Mangat JS, Tay SS, King Y, Monk CJ, White PA, Ewan PW.Clark AT, et al. Among authors: ewan pw.Allergy. 2007 Jul;62(7):744-9. doi: 10.1111/j.1398-9995.2007.01363.x.Allergy. 2007.PMID: 17573721Clinical Trial.