Spine
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Retrospective case series. ⋯ 4.
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Validity and responsiveness study using a randomized clinical trial and prospective cohort study of patients with low back pain (LBP). ⋯ 2.
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Retrospective. ⋯ N/A.
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Retrospective assessment of risk factors using univariate and multivariate analyses. ⋯ 4.
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Histological features of the intervertebral disc (IVD)-endplate interface were analyzed. ⋯ 5.