1. Archibald, R. M. (1957). Clin. Chem., 3, 102.
2. Bare, L. N., and Wiseman, R. F. (1963). Amer. J. clin. Path., 40, 556.
3. Paper read to New Zealand Rheumatism Association;Beale, R.M.,1954
4. Bittner, D. L., Hall, S. G., and McCleary, M. L. (1963).
5. Amer. J. clin. Path., 40, 423. Br0chner-Mortensen, K. (1958). Ann. rheum. Dis., 17, 1.