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Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- KELLGREN J. H. Radiological signs of rheumatoid arthritis; a study of observer differences in the reading of hand films. Ann Rheum Dis. 1956 Mar;15(1):55–60. doi: 10.1136/ard.15.1.55. [DOI] [PMC free article] [PubMed] [Google Scholar]