Spine
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Comparative Study
Imaging Comparison Between Chinese and Japanese Patients With Cervical Ossification of the Posterior Longitudinal Ligament.
A retrospective study. ⋯ 3.
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A prospective cohort study. ⋯ 3.
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A retrospective epidemiological study. ⋯ 3.
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Community-based, cohort study. ⋯ 2.
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Multicenter Study
Prediction Accuracy of Common Prognostic Scoring Systems for Metastatic Spine Disease: Results of a Prospective International Multicentre Study of 1469 Patients.
A prospective multicenter cohort study. ⋯ 3.