Spine
-
Retrospective study. ⋯ 3.
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Prospective clinical series. ⋯ N/A.
-
A retrospective clinical study was performed. ⋯ 4.
Retrospective study. ⋯ 3.
Prospective clinical series. ⋯ N/A.
A retrospective clinical study was performed. ⋯ 4.