Spine
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A retrospective analysis. ⋯ 4.
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Qualitative study. ⋯ 4.
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Systematic review OBJECTIVE.: To undertake a systematic review of published literature to evaluate efficacy of bone graft substitutes on radiographic and clinical outcomes in single- or double-level anterior cervical discectomy and fusion (ACDF) for degenerative disease. ⋯ 4.