Spine
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Retrospective study. ⋯ 3.
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Retrospective cohort study. ⋯ 3.
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Observational, anatomical, cadaveric study. ⋯ 5.
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This study is a systematic literature review and meta-analysis. ⋯ 1.
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Randomized Controlled Trial
Multimodal Nutritional Management in Primary Lumbar Spine Surgery: A Randomized Controlled Trial.
A prospective randomized controlled trial. ⋯ 2.