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Williams JG, Cheung WY, Russell IT, Cohen DR, Longo M, Lervy B.Williams JG, et al. Among authors: cohen dr.BMJ. 2000 Feb 26;320(7234):544-8. doi: 10.1136/bmj.320.7234.544.BMJ. 2000.PMID: 10688560Free PMC article.Clinical Trial.
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