Spine
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A case report and review of the literature. ⋯ 5.
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Multicenter Study
Predictive Risk Factors of Cervical Spine Instabilities in Rheumatoid Arthritis: A Prospective Multicenter over 10-Year Cohort Study.
A prospective multicenter cohort study for more than 10 years of outpatients with rheumatoid arthritis (RA). ⋯ 3.
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Retrospective analysis of national insurance billing database. ⋯ 3.
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A retrospective study of prospectively collected data. ⋯ 3.