Spine
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A retrospective single-center study. ⋯ 4.
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Systematic review and meta-analysis. ⋯ 2.
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Single-center retrospective analysis of consecutively collected data. ⋯ 3.
A retrospective single-center study. ⋯ 4.
Systematic review and meta-analysis. ⋯ 2.
Single-center retrospective analysis of consecutively collected data. ⋯ 3.