المؤلفون: Collado, P., Naredo, E., Calvo, C., Gamir, M. L., Calvo, I., Garcia, M. L., Merino, R., Grana, J., Bustabab, S., Garrido, J.

المصدر: Rheumatology ; volume 52, issue 8, page 1477-1484 ; ISSN 1462-0324 1462-0332

الاتاحة: http://dx.doi.org/10.1093/rheumatology/ket148
http://academic.oup.com/rheumatology/article-pdf/52/8/1477/5070141/ket148.pdf