Spine
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A retrospective cohort study from a single institution. ⋯ 3.
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A prospective study. ⋯ 4.
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Prospective research in middle-aged and elderly people. ⋯ 2.
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Case Reports
Delayed penetration of the thoracic aorta by pedicle screws: a case report of screws left as-is.
A case report. ⋯ 5.