REFERENCES
- Barbara, L., Belsasso, E., Bianchi Porro, G., Blasi, A., Caenazzo, E., Di Febo, G., Di Mario, F., Farini, R., Giorgi-Conciato, M., Mangiameli, A., Miglioli, M., Naccarato, R. & Petrillo, M. Scand. J. Gastroent. 1979, 14, Suppl. 57, 11–19
- Barman, M. L. & Larson, R. K. Amer. J. Med. Sci. 1963, 246, 325–328
- Hammer, R., Bozler, G., Zimmer, A. & Koss, F. W. Therapiewoche 1977, 27, 1567–1574
- Hammer, R. et al. Therapiewoche 1977, 27, 1575–1593
- Ivey, K. J. Gastroenterology 1975, 68, 154–166
- Jaup, P. H., Stockbrügger, R. & Dotevall, G. Scand. J. Gastroent. 1979, 14, 621–624
- Longstreth, G. F., Go, V. L. W. & Malagelada, J. R. New Engl. J. Med. 1976, 294, 801–804
- Stockbrügger, R., Jaup, B., Hammer, R. & Dotevall G. Scand. J. Gastroent. 1979, 14, 615–620
- Watkinson, G. Gastroenterology 1951, 18, 377–390