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Martinson NA, Omar T, Gray GE, Vermaak JS, Badicel M, Degiannis E, Steyn J, McIntyre JA, Smith M.Martinson NA, et al.Trans R Soc Trop Med Hyg. 2007 Feb;101(2):176-82. doi: 10.1016/j.trstmh.2006.04.002. Epub 2006 Jun 30.Trans R Soc Trop Med Hyg. 2007.PMID: 16814822