Spine
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A prospective, nonrandomized cohort study. ⋯ 4.
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Retrospective study of prospectively collected data. ⋯ 3.
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A prospective and retrospective cross-sectional cohort analysis. ⋯ 4.
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A case-control study. ⋯ 4.
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Retrospective study evaluating cranial facet joint violation (FJV) by pedicle screws. ⋯ 3.