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Tyndall M, Malisa M, Plummer FA, Ombetti J, Ndinya-Achola JO, Ronald AR.Tyndall M, et al.J Infect Dis. 1993 Feb;167(2):469-71. doi: 10.1093/infdis/167.2.469.J Infect Dis. 1993.PMID: 8421184