Spine
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Comparative Study
Utility of Flexion-Extension Radiographs in Lumbar Spondylolisthesis: A Prospective Study.
Prospective cohort study in consecutive patients. ⋯ 2.
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Retrospective cohort analysis of a prospective registry. ⋯ 3.
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Longitudinal cohort. ⋯ 2.
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A transcriptional expression assessment of human samples. ⋯ N/A.