Abstracts of papers presented at the 29th Nordic congress of gastroenterology, the 20th Nordic endoscopic meeting and the 8th SAGIM (Scandinavian Association of Gastrointestinal Motility) scientific session : Odense, Denmark, 12-14 June 1997. Oslo : Scandinavian University Press, 1997. 71 s. Scandinavian Journal of Gastroenterology Suppl. 224.