Spine
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Case report. ⋯ 5.
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A retrospective study. ⋯ 3.
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Retrospective analysis of data from patients participating in the Lumbar Spinal Stenosis Outcome Study (LSOS). ⋯ 3.
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Cross-sectional study. ⋯ 3.
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Comparative Study
Utility of Flexion-Extension Radiographs in Lumbar Spondylolisthesis: A Prospective Study.
Prospective cohort study in consecutive patients. ⋯ 2.