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Sinkala M, Stout JP, Vermund SH, Goldenberg RL, Stringer JS.Sinkala M, et al. Among authors: vermund sh.Lancet. 2001 Nov 10;358(9293):1611-2. doi: 10.1016/S0140-6736(01)06662-4.Lancet. 2001.PMID: 11716891