Spine
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Retrospective review. ⋯ 3.
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Retrospective study of a consecutive series of patients undergoing lumbar spine magnetic resonance imaging (MRI) for low back pain at a single institution. ⋯ 3.
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Retrospective cohort study. ⋯ 4.
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Case report. ⋯ 5.
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Retrospective clinical study. ⋯ 4.