Spine
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A retrospective study. ⋯ 4.
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Case-control study for motion analysis. ⋯ 3.
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Retrospective Review of Prospective cohort. ⋯ 4.
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Retrospective analysis. ⋯ 3.
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Observational Study
What Are the Costs of Cervical Radiculopathy Prior to Surgical Treatment?
Retrospective, observational study. ⋯ 3.