1. Bywaters, E. G. L. (1957). Ann. rheum. Dis., 16, 84.
2. Coste, F., and Forestier, J. (1935). Bull. Soc. mid. H6p. Paris, 51, 772.
3. Euziere, J., Pages, P., Lafon, R., Mirouze, J., and Salvaing, J. (1949). Rev. Rhum., 16, 30.
4. Forestier, J. (1935). Rev. Neurol., 63, 442.
5. Hench, P. S. (1940). J. Amer. med. Ass., 115, 2025.