REFERENCES
- Bergegårdh, S. & Olbe, L. Scand. J. Gastroent. 1975, 10, 171–176.
- Chapman, M. L., Werther, J. L., Rudick, J. & Janowitz, H. D. Gastroenterology 1972, 63, 962–972.
- Debas, H. T., Konturek, S. J., Walsh, J. H. & Grossman, M. T. Gastroenterology 1974, 66, 526–532.
- Grossman, M. I. & Robertson, C. R. Amer. J. Physiol. 1948, 153, 1–9.
- Hansky, J., Korman, M. G., Cowley, D. J. & Baron, J. H. Gut 1971, 12, 959–962.
- Hirschowitz, B. F. Gastroenterology 1968, 54, 523–531.
- Tsenberg, J. I., Walsh, J. H., Best, W. R. & Grossman, M. I. Gastroenterology 1972, 62, 764.
- Johnson, L. R. & Grossman, M. I. Gastroenterology 1969, 56, 687–692.
- Morrison, D. M. Multivariate Statistical Methods. McGraw-Hill Book Company, New York, 1967.
- Nyhus, L. M., Chapman, N. D., De Vito, R. V. & Harkins, H. N. Gastroenterology 1960, 39, 582–589.
- Ritchie Jr, W. P., Butler, B. A. & Delaney, J. P. Ann. Surg. 1972, 175, 4, 594–600.
- Sugawara, K., Isaza, J., Curt, J. R. & Woodward, E. R. Arch. Surg. 1970, 100, 201–204.
- Woodward, E. R., Lyon, E. S., Landor, J. & Dragstedt, L. R. Gastroenterology 1954, 27, 766–785.
- Woodward, E. R., Robertson, C., Fried, W. & Schapiro, H. Gastroenterology 1957, 32, 868–877.