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Systematic Changes in the National Surgical Quality Improvement Program database over the Years can affect Comorbidity Indices Such as the Modified Frailty Index and Modified Charlson Comorbidity Index for Lumbar Fusion Studies

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Description scientific article published on 15 September 2017
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author: Taylor D Ottesen  Patawut Bovonratwet 

Publication date September 15, 2017
Language English
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