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2. Babcock, M. J. (1955). J. Nutrit., 55, 323.
3. Rheumatoid Arthritis: Its Pathology, Morbid Anatomy, and Treatment;Bannatyne, G.A.,1898
4. Bywaters, E. G. L. (1949). Ann. rheum. Dis., 8, 1 (Case 2, see p. 7).
5. Bywaters, E. G. L. (1957). Ibid., 16, 84.