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2. Summarized in "Second Pan-American Congress on Rheumatic Diseases";Cohen, A.S.; McNeil, M.; Sharp, J.T.; Schubart, A.; Calabro, J.; Calkins, E.,1959
3. Forestier, J., Rotes-Querol, J., and Jacqueline, F. (1950). Rev. Rhum., 17, 407.
4. Hart, F. Dudley, and Robinson, K. C. (1959). Ann. rheum. Dis., 18, 15.
5. M;Lience, E.,1960