Spine
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Experimental study. ⋯ N/A.
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Systematic review with meta-analysis. ⋯ 1.
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Retrospective cohort study. ⋯ 3.
Experimental study. ⋯ N/A.
Systematic review with meta-analysis. ⋯ 1.
Retrospective cohort study. ⋯ 3.