<style face="normal" font="default" size="100%">Impact of a video-based health education intervention on soil-transmitted helminth infections in Chinese schoolchildren.</style>

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2<style face="normal" font="default" size="100%">Impact of a video-based health education intervention on soil-transmitted helminth infections in Chinese schoolchildren.</style><style face="normal" font="default" size="100%">Impact of a video-based health education intervention on soil-transmitted helminth infections in Chinese schoolchildren.</style>