References
- Committee of the American Rheumatism Association: J.A.M.A., 171, 1205, 1959.
- Finkelstein, A. E., Kwok, G., Hall, A. P. & Bayles, T. B.: New England J. Med., 264, 270, 1961.
- Finkelstein, A. E., Woerner, T. E., Smith, J. C., Bayles, T. B., Levine, H. D. & Kwok, G.: Am. J. Med., 35, 163, 1963.
- Hunder, G. G., Vaughan, J. H. & Jacox, R. F.: Arth. & Rheumat., 6, 191, 1963.
- Singer, J. M. & Plotz, C. M.: Am. J. Med., 21, 888, 1956.