Spine
-
Retrospective cohort. ⋯ 4.
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Comparative Study
Cages in ACDF are Associated With a Higher Nonunion Rate Than Allograft: A Stratified Comparative Analysis of 6130 Patients.
A retrospective database review. ⋯ 3.
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Retrospective cohort study. ⋯ 2.
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A cross-sectional study. ⋯ N/A.