<style face="normal" font="default" size="100%">Reduction in hospital mortality over time in a hospital without a pediatric medical emergency team: limitations of before-and-after study designs.</style>

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0<style face="normal" font="default" size="100%">Reduction in hospital mortality over time in a hospital without a pediatric medical emergency team: limitations of before-and-after study designs.</style><style face="normal" font="default" size="100%">Reduction in hospital mortality over time in a hospital without a pediatric medical emergency team: limitations of before-and-after study designs.</style>