Spine
-
Retrospective national database analysis. ⋯ 4.
-
Retrospective cohort study. ⋯ 2.
-
Randomized, double-blinded, animal model. ⋯ 2.
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Multicenter case-control study. ⋯ 2.
Retrospective national database analysis. ⋯ 4.
Retrospective cohort study. ⋯ 2.
Randomized, double-blinded, animal model. ⋯ 2.
Multicenter case-control study. ⋯ 2.