Spine
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Cohort study. ⋯ 3.
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An anatomic study of pedicle dimensions was performed for lower thoracic vertebrae from American human subjects. ⋯ N/A.
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Within-study cost-utility analysis. ⋯ 2.
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Cross-sectional study. ⋯ 3.
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Retrospective clinical study. ⋯ 4.