<style face="normal" font="default" size="100%">Effects of extended work shifts and shift work on patient safety, productivity, and employee health.</style>

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0<style face="normal" font="default" size="100%">Effects of extended work shifts and shift work on patient safety, productivity, and employee health.</style><style face="normal" font="default" size="100%">Effects of extended work shifts and shift work on patient safety, productivity, and employee health.</style>