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Gichuhi C, Obimbo E, Mbori-Ngacha D, Mwatha A, Otieno P, Farquhar C, Wariua G, Wamalwa D, Bosire R, John-Stewart G.Gichuhi C, et al. Among authors: farquhar c.East Afr Med J. 2005 Sep;82(9):447-51. doi: 10.4314/eamj.v82i9.9334.East Afr Med J. 2005.PMID: 16619717