References
- Ireland A, Gear P, Colin-Jones DG, Golding PL, Ramage JK, Williams JG, Leicester RJ. Lancet 1984; 2: 274–276
- Capurso L, Monte PR, Mazzeo F, Menardo G, Morettini A, Saggioro A, Tafner G. Br Med J 1984; 289: 1418–1420
- Berstad A. Tidsskr Nor Laegeforen 1983; 103: 2182–2183
- Gledhill T, Howard OM, Buck M, Paul A, Hunt RH. Gut 1983; 24: 904–908
- Frislid K, Berstad A. Scand J Gastroenterol 1984; 19: 429–432
- Frislid K, Berstad A. Scand J Gastroenterol 1985; 20: 711–714