<style face="normal" font="default" size="100%">An impact evaluation of two rounds of mass drug administration on the prevalence of trachoma in Plateau and Nasarawa States of Nigeria: A clustered cross sectional survey.</style>

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2<style face="normal" font="default" size="100%">An impact evaluation of two rounds of mass drug administration on the prevalence of trachoma in Plateau and Nasarawa States of Nigeria: A clustered cross sectional survey.</style><style face="normal" font="default" size="100%">An impact evaluation of two rounds of mass drug administration on the prevalence of trachoma in Plateau and Nasarawa States of Nigeria: A clustered cross sectional survey.</style>