المؤلفون: Williams, H. J., Ward, J. R., Dahl, S. L., Clegg, D. O., Willkens, R. F., Oglesby, T., Weisman, M. H., Schlegel, S., Michaels, R. M., Luggen, M. E., Polisson, R. P., Singer, J. Z., Kantor, S. M., Shiroky, J. B., Small, R. E., Gomez, M. I., Reading, J. C., Egger, M. J.

المصدر: Arthritis & Rheumatism ; volume 31, issue 6, page 702-713 ; ISSN 0004-3591 1529-0131

الاتاحة: http://dx.doi.org/10.1002/art.1780310602
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fart.1780310602
https://onlinelibrary.wiley.com/doi/pdf/10.1002/art.1780310602