Spine
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Retrospective cohort study. ⋯ 4.
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Multicenter case-control study. ⋯ 3.
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Clinical case series. ⋯ 4.
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Review Meta Analysis
Posterolateral Fusion Versus Interbody Fusion for Degenerative Spondylolisthesis: A Systematic Review and Meta-Analysis.
Systematic literature review and meta-analysis. ⋯ 3.