REFERENCES
- Dyck, W. P. Gastroenterology 1971, 60, 864–869
- Goldberg, D. M. & Wormsley, K. G. Gut 1970, 11, 859–866
- Hage, G., Tiscornia, O., Palasciano, G. & Sarles, H. Blomed. 1974, 21, 263–267
- Lawrence, W., Khentigan, A., Hudock, J., & Vanamee, P. Surgery 1961, 49, 666–675
- Pascal, J. P., Vaysse, N., Angier, D. & Ribet, A. Scand. J. Gastroent. 1968, 3, 444–448
- Schapiro, H., Britt, L. G., Evans, S. R. & Wilson, H. Amer. J. Surg. 1967, 113, 65–68
- Signer, R. D., Seifter, D., Levenson, S. M. & Ragins, H. Gastroenterology 1973, 64, 802
- Snedecor, G. W. & Cochran, W. G. Statistical Methods, 6th Ed. Ames, Iowa, 1967
- Thjodleifsson, B. & Wormsley, K. G. Scand. J. Gastroent. 1976, 11, 273–281
- Wormsley, K. G. Scand. J. Gastroent. 1968, 3, 183–188
- Wormsley, K. G. Scand. J. Gastroent. 1969, 4, 717–726
- Wormsley, K. G. Scand. J. Gastroent. 1970, 5, 353–360