The Spine Journal · 2013 · 213 citations · 31 references
MedicineOrthopedic SurgerySurgeryGeneral SurgeryOrthopedicsSpine SurgeryComorbidityPostoperative MorbiditySpinal AnesthesiaSurgical ComplicationsCharlson Comorbidity IndexGrade LevelOutcomes After Spinal Fusion
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Validation of a combined comorbidity index
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American Society of Anesthesiologists
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