Spine
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Meta Analysis
The Influence of Conflicts of Interest on Outcomes in the Lumbar Disc Arthroplasty Literature: A Systematic Review.
A systematic review. ⋯ 3.
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Retrospective patient series analysis with update of long-term data. ⋯ 4.
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A retrospective review of prospectively collected data. ⋯ 3.
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Case-control study. ⋯ 3.
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Record linkage study using healthcare utilization and costs data. ⋯ 3.