REFERENCES
- Becker, H. D., Reeder, D. D. & Thompson, J. C. Proc. Soc. exp. Biol. (N.Y.) 1974, 143, 238–240.
- Byrnes, D. J. & Lazarus, L. Aust. N. Z. J. Med. 1971, 1, 26–29.
- Byrnes, D. J., Young, J. D., Chisholm, D. J. & Lazarus, L. Brit. med. J. 1970, 2, 626–629.
- Emås, S., Svensson, S. O., Dörner, M. & Kacss, H. Scand. J. Gastroent. 1974, 9, 629–637.
- Feurle, G., Ketterer, H., Becker, H. D. & Creutzfeldt, W. Scand. J. Gastroent. 1972, 7, 177–183.
- Gedde-Dahl, D. Scand. J. Gastroent. 1974, 9, 41–47.
- Isenberg, J. I., Walsh, J. H., Best, W. R. & Grossman, M. I. Gastroenterology 1972, 62, 764 (abstract).
- Korman, M. G., Hansky, J., Coupland, G. A. E. & Cumberland, V. H. Scand. J. Gastroent. 1973, 8, 235–239.
- Korman, M. G., Soveny, C. & Hansky, J. Gut 1971, 12, 899–902.
- Korman, M. G., Soveny, C. & Hansky, J. Gut 1972, 13, 166–169.
- Moore, J. G. & Wolfe, M. Digestion 1973, 9, 97–105.
- Petersen, H. & Myren, J. 1975 In press.
- Polak, J. M., Hoffbrand, A. V., Reed, P. I., Bloom, S. & Pearse, A. G. E. Scand. J. Gastroent. 1973, 8, 361–367.
- Reeder, D. D., Jackson, B. M., Ban, J. L., Davidson, W. D. & Thompson, J. C. Surg. Forum 1970, 21, 290–291.
- Rehfeld, J. F. Scand. J. Gastroent. 1973, 8, 577–583.
- Rehfeld, J. F. & Stadil, F. Gut 1973, 14, 369–373.
- Royston, C. M. S., Polak, J. M., Bloom, S., Cooke, W. M., Russel, C. R. C., Pearse, A. G. E., Baron, J. H., Spencer, J. & Welbourn, R. B. Gut 1974, 15, 840–841.
- Schrumpf, E. & Sand, T. Scand. J. Gastroent. 1972, 7, 683–687.
- Stadil, F. & Rehfeld, J. F. Scand. J. Gastroent. 1973, 8, 101–112.
- Stadil, F. & Rehfeld, J. F. Scand. J. Gastroent. 1974, 9, 143–147.
- Strickland, R. G., Bhatal, P. S., Korman, M. G. & Hansky, J. Brit. med. J. 1971, 4, 451–453.
- Trudeau, W. L. & McGuigan, J. E. New Engl. J. Med. 1971, 284, 408–412.
- Wesdorp, R. I. C. & Fischer, J. E. Lancet 1974, 2, 857–860.