Spine
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Meta Analysis
Intrathecal Morphine in Spine Surgery: A Meta-analysis of Randomized Controlled Trials.
Meta-analysis of randomized controlled trials (RCTs). ⋯ 1.
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A prospective longitudinal cohort. ⋯ 2.
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A prospective cohort study. ⋯ 2.
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An experimental model study and a short review of literature. ⋯ N/A.