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Scott JE, Swallow V, Coulthard MG, Lambert HJ, Lee RE.Scott JE, et al. Among authors: lambert hj.Lancet. 1997 Aug 9;350(9075):396-400. doi: 10.1016/s0140-6736(97)01515-8.Lancet. 1997.PMID: 9259653Clinical Trial.