Spine
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Analysis of patients in a prospective registry. ⋯ 3.
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Experimental animal study of treatment of SCI. ⋯ N/A.
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A meta-analysis of published randomized controlled Trials (RCTs). ⋯ 1.
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Retrospective review of a prospective database. ⋯ 3.
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A prospective study. ⋯ 3.