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Ngondi J, Onsarigo A, Matthews F, Reacher M, Brayne C, Baba S, Solomon AW, Zingeser J, Emerson PM.
Effect of three years of SAFE (surgery, antibiotics, facial cleanliness, and environmental change) strategy for trachoma control in southern Sudan: a cross-sectional study.
Lancet 2006;368:589-95. [Ref.ID 77813]
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