Spine
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Randomized Controlled Trial Multicenter Study Comparative Study
Cognitive Interventions and Nutritional Supplements (The CINS Trial): A Randomized Controlled, Multicenter Trial Comparing a Brief Intervention With Additional Cognitive Behavioral Therapy, Seal Oil, and Soy Oil for Sick-Listed Low Back Pain Patients.
A randomized controlled trial. ⋯ 2.
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Meta Analysis Comparative Study
Cervical Disc Arthroplasty Versus Anterior Cervical Discectomy and Fusion for Incidence of Symptomatic Adjacent Segment Disease: A Meta-Analysis of Prospective Randomized Controlled Trials.
Meta-analysis of randomized controlled trials. ⋯ 1.
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Systematic literature review. ⋯ N/A.
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Systematic review and expert consensus. ⋯ N/A.
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Systematic literature review. ⋯ 2.