<style face="normal" font="default" size="100%">Nursing skill mix in European hospitals: cross-sectional study of the association with mortality, patient ratings, and quality of care.</style>

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0<style face="normal" font="default" size="100%">Nursing skill mix in European hospitals: cross-sectional study of the association with mortality, patient ratings, and quality of care.</style><style face="normal" font="default" size="100%">Nursing skill mix in European hospitals: cross-sectional study of the association with mortality, patient ratings, and quality of care.</style>