REFERENCES
- Amdrup, E., Andersen, D. & Jensen, H.-E. Wld. J. Surg. 1977, 1, 19–27
- Amdrup, E., Clemmesen, T. & Andreassen, J. Amer. J. Dig. Dis. 1967, 12, 351–355
- Amdrup, E. & Jensen, H.-E. Gastroenterology 1970, 59, 522–527
- Eldh, J., Kewenter, J., Koch, N. G. & Olson, P. Brit. J. Surg. 1974, 61, 90–93
- Faxén, A., Alpsten, M., Cederblad, Å., Kewenter, J. & Rossander, L. Scand. J. Gastroent. 1978, 13, 727–733
- Faxén, A. & Kewenter, J. Scand. J. Gastroent. 1978, 13, in press
- Faxén, A. & Kewenter, J. Scand. J. Gastroent. 1978, 13, in press
- Goligher, J. C., Hill, G. L., Kenny, T. E. & Nutter, E. Brit. J. Surg. 1978, 65, 145–151
- Grassi, G., Orecchia, C., Cantarelli, I. & Grassi, G. B. Jr. Chir. Gastroent. (Surg. Gastroent.) 1911, 11, 51–58
- Greenall, M. J., Lyndon, P. J., Goligher, J. C. & Johnston, D. Gastroenterology 1975, 68, 1421–1425
- Humphrey, C. S., Johnston, D., Walker, B. E., Pulvertaft, C. N. & Goligher, J. C. Brit. Med. J., 1972, 785–787
- Johnston, D., Gut 1974, 15, 748–757
- Johnston, D., Humphrey, C. S., Walker, B. E., Pulvertaft, C. N. & Goligher, J. C. Brit. Med. J. 1972, 788–790
- Jordan, P. H. New Engl. J. Med. 1972, 287, 1329–1337
- Jordan, P. H. Ann. Surg. 1976, 183, 619–626
- Kennedy, T. & Connel, A. M. Lancet 1969, 899–901
- Kronborg, O. & Madsen, P. Gut 1975, 16, 268–271
- Liavåg, I. & Roland, M., Abstracts of Papers X Scand. Conf. on Gastroent. 1975, Scand. J. Gastroent. 1976, 11, Suppl. 38 60
- Meurling, S. Acta Soc. Med. upsalien., Suppl. 3, 1953
- Sawyers, J. L., Herrington, J. L., Jr. & Burney, D. P. Ann. Surg. 1977, 186, 510–517
- Visick, A. H. Lancet 1948, 505–510