Spine
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    Comparative StudyFeasibility of Proxy-Reported EQ-5D-3L-Y and Its Agreement in Self-reported EQ-5D-3L-Y for Patients With Adolescent Idiopathic Scoliosis.Prospective cohort study. ⋯ 2. 
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    Case-control study. ⋯ 3. 
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    Expert opinion-modified Delphi study. ⋯ 5. 
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    Retrospective analysis. ⋯ 4. 
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    Secondary analysis of subjects in the control anterior cervical discectomy and fusion (ACDF) arm of Medtronic Investigational Device Exemption (IDE) trials for cervical disc arthroplasty (CDA). ⋯ 2.