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Lawson L, Thacher TD, Yassin MA, Onuoha NA, Usman A, Emenyonu NE, Shenkin A, Davies PD, Cuevas LE.Lawson L, et al. Among authors: thacher td.Trop Med Int Health. 2010 Dec;15(12):1481-90. doi: 10.1111/j.1365-3156.2010.02638.x. Epub 2010 Oct 19.Trop Med Int Health. 2010.PMID: 20958890Free article.Clinical Trial.