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David AS, Wessely S, Pelosi AJ.David AS, et al.Br Med J (Clin Res Ed). 1988 Mar 5;296(6623):696-9. doi: 10.1136/bmj.296.6623.696.Br Med J (Clin Res Ed). 1988.PMID: 3128374Free PMC article.Review.
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