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Mann JS, Howarth PH, Holgate ST.Mann JS, et al. Among authors: howarth ph.Br Med J (Clin Res Ed). 1984 Aug 25;289(6443):469. doi: 10.1136/bmj.289.6443.469.Br Med J (Clin Res Ed). 1984.PMID: 6235889Free PMC article.Clinical Trial.No abstract available.