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Martinez A, Valdivia A, Pascual-Salcedo D, Lamas JR, Fernández-Arquero M, Balsa A, Fernández-Gutiérrez B, de la Concha EG, Urcelay E.Martinez A, et al.Rheumatology (Oxford). 2005 Oct;44(10):1263-6. doi: 10.1093/rheumatology/kei008. Epub 2005 Jul 5.Rheumatology (Oxford). 2005.PMID: 15998632