<style face="normal" font="default" size="100%">Randomised trial of face-washing to develop a standard definition of a clean face for monitoring trachoma control programmes.</style>

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0<style face="normal" font="default" size="100%">Randomised trial of face-washing to develop a standard definition of a clean face for monitoring trachoma control programmes.</style><style face="normal" font="default" size="100%">Randomised trial of face-washing to develop a standard definition of a clean face for monitoring trachoma control programmes.</style>