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Randomized Controlled Trial (RCT)

Diarrhoea in Guatemalan children

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Local drinking water filters

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Water quality: ceramic filters

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Sodium dichloroisocyanurate treatment

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Waterless Hand Sanitizer

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School based water treatment

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Handwashing promotion and child development

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Concrete Biosand Filter

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Alcohol hand gel

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Plastic BioSand Water Filter

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