Spine
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A retrospective database study. ⋯ 3.
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Prospective review of consecutive patients. ⋯ 3.
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A retrospective cohort analysis of prospectively collected clinical data. ⋯ 3.
A retrospective database study. ⋯ 3.
Prospective review of consecutive patients. ⋯ 3.
A retrospective cohort analysis of prospectively collected clinical data. ⋯ 3.