References
- American Rheumatism Association: Diagnostic Criteria for Rheumatoid Arthritis. Ann. Rheum. Dis., 18, 49, 1959.
- Duthie, J. J. R., Brown, P. E., Knox, J. D. E. & Thompson, M.: Ann. Rheum. Dis., 16, 411, 1957.
- Edström, G. & Gedda, P. O.: Acta Rheum. Scand., 3, 129, 1957.
- Jonsson, E.: Acta Orthopaed. Scand., 30, 115, 1960.
- Lawrence, J. S. & Bennet, P. H.: Ann. Rheum. Dis., 19, 20, 1960.
- Linneweh, F.: Die Prognose Chronischer Erkrankungen. Springer-Verlag, Berlin, 1960.
- Mackenzie, J.: Symptoms and Their Interpretation, ed. 4, p. v., 1960.
- Nettelbladt, E.: Acta Rheum. Scand., 8, 63, 1962.
- Nettelbladt, E. & Sundblad, L.: Acta Rheum. Scand., 8, 57, 1962.
- Shetlar, M. R., Payne, R. W., Padron, J., Felton, F. & Ishmael, W. K.: J. Lab. Clin. Med., 48, 194, 1956.
- Steinbrocker, O., Trœger, C. & Batterman, R. C.: J. Amer. Med. Ass., 140, 659, 1949.