<style face="normal" font="default" size="100%">The relationship between inpatient cardiac surgery mortality and nurse numbers and educational level: analysis of administrative data.</style>

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0<style face="normal" font="default" size="100%">The relationship between inpatient cardiac surgery mortality and nurse numbers and educational level: analysis of administrative data.</style><style face="normal" font="default" size="100%">The relationship between inpatient cardiac surgery mortality and nurse numbers and educational level: analysis of administrative data.</style>