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Hay E, Gordon C, Emery P.Hay E, et al. Among authors: gordon c.Ann Rheum Dis. 1993 Mar;52(3):169-72. doi: 10.1136/ard.52.3.169.Ann Rheum Dis. 1993.PMID: 8484667Free PMC article.
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Sutcliffe N, Clarke AE, Gordon C, Farewell V, Isenberg DA.Sutcliffe N, et al. Among authors: gordon c.Rheumatology (Oxford). 1999 Nov;38(11):1130-7. doi: 10.1093/rheumatology/38.11.1130.Rheumatology (Oxford). 1999.PMID: 10556268