REFERENCES
- Bardhan, K. D., et al. Gut 1979, 20, 68–74
- Bianchi Porro, G., Cheli, R., Dobrilla, G., Verme, G., Molinari, F., Pera, A., Petrillo, M. & Valentini, M. Digestion 1978, 17, 383–386
- Blackwood, W. S., Maudgal, D. P. & Northfield, T. C. Lancet 1978, 626–627
- Boesby, S., Madsen, T. & Wallin, L. In press
- Cargill, J. M., Peden, N., Saunders, J. H. B. & Wormsley, K. G. Lancet 1978, 1113–1115
- Corazziari, E., Pozzessere, C., Dani, S., Anzini, F. & Torsoli, A. Gastroenterology 1978, 75, 275–277
- Csendes, A., Øster, M., Brandsborg, O., Møller, J., Brandsborg, M. & Amdrup, E. Scand. J. Gastroent. 1978, 13, 437–441
- Epstein, O., Judelman, J., Bevan, G. & Ardeman, S. Gut 1978, 19, 327–329
- Gudmand-Højer, E., Birger Jensen, K., Krag, E., Rask-Madsen, J., Rahbek, I., Rune, S. J. & Wulff, H. R. Brit. Med. J. 1978, 1095–1097
- Higgs, R. H., Smyth, R. D. & Castell, D. O. New Engl. J. Med. 1974, 291, 486–490
- Hollander, D., Hossain, Z., & Sufi, A. M. Dig. Dis. 1976, 21, 361–365
- Ivey, K. J. & Mackercher, P. A. Gut 1978, 19, 414–418
- Kravitz, J. J., Snape, W. J. & Cohen, S. Gastroenterology 1978, 74, 435–440
- Logan, R. F. A., Forrest, J. A. H., McLoughlin, G. P., Lidgard, G. & Heading, R. C. Digestion 1978, 18, 220–226
- Longstreth, G. F., Go, V. L. W. & Malagelada, J.-R. New Engl. J. Med. 1976, 294, 801–804
- Moberg, S., Carlberger, G., Gilljam, H. & Befritz, R. Scand. J. Gastroent. 1977, 12, 145–148
- Osborne, D. H., Lennon, J., Henderson, M., Lidgard, G., Creel, R. & Carter, D. C. Gut 1977, 18, 99–105
- Pounder, R. E., Hunt, R. H., Vincent, S. H., Milton-Thompson, G. J. & Misiewicz, J. J. Gut 1977, 18, 85–90
- Pounder, R.E., Williams, J.G., Milton-Thompson, G. J. & Misiewicz, J. J. Lancet 1975, 1069–1072
- Powell-Jackson, P., Barkley, H. & Northfield, T. C. Lancet 1978, 1068–1069
- Richardson, C. T., Walsh, J. H. & Hicks, M. I. Gastroenterology 1976, 71, 19–23
- Wallin, L. Scand J. Gastroent. 1980, 15, in press
- Wallin, L. Scand. J. Gastroent. 1980, 15, in press
- Wallin, L. & Madsen, T. Scand. J. Gastroent. 1979, 14, 561–566
- Wallin, L., Madsen, T., Boesby, S. & Sørensen, O. Scand. J. Gastroent. 1979, 14, 481–487
- Wallin, L., Madsen, T., Brandsborg, M., Brandsborg, O. & Larsen, N.-E. Scand. J. Gastroent. 1979, 14, 349–353