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Maudgal DP, Bird R, Northfield TC.Maudgal DP, et al. Among authors: northfield tc.Br Med J. 1979 Apr 7;1(6168):922-3. doi: 10.1136/bmj.1.6168.922.Br Med J. 1979.PMID: 435882Free PMC article.Clinical Trial.
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