Spine
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Retrospective comparative cohort study. ⋯ 3.
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Retrospective cohort. ⋯ 3.
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A prospective clinical study of factors related to myelopathy deterioration due to Thoracic myelopathy due to ossification of the posterior longitudinal ligament (T-OPLL). ⋯ 3.
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A prospective randomized clinical trial. ⋯ 1.
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Systematic Review. ⋯ 4.