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Smith AW, Bradley AK, Wall RA, McPherson B, Secka A, Dunn DT, Greenwood BM.Smith AW, et al. Among authors: wall ra.Trans R Soc Trop Med Hyg. 1988;82(2):312-20. doi: 10.1016/0035-9203(88)90459-2.Trans R Soc Trop Med Hyg. 1988.PMID: 3188162
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