Spine
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A retrospective cohort study. ⋯ 4.
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Multicenter Study
Pedicle Subtraction Osteotomy in the Revision Versus Primary Adult Spinal Deformity Patient: Is There a Difference in Correction and Complications?
Multicenter, prospective study of consecutive adult spinal deformity (ASD) patients. ⋯ 3.
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Retrospective database analysis. ⋯ 4.
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A questionnaire survey. ⋯ N/A.
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Retrospective review of prospectively collected data. ⋯ 3.