Spine
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Multicenter Study
Novel Nomograms as Aids for Predicting Recurrence and Survival in Chordoma Patients: A Retrospective Multicenter Study in mainland China.
A retrospective data analysis was performed. ⋯ 4.
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Retrospective cohort study. ⋯ 3.
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Retrospective case series. ⋯ 3.
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Retrospective study. ⋯ 3.
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Retrospective cohort study. ⋯ 3.