Abstracts of papers presented at the 31st Nordic meeting on gastroenterology, the 22nd SADE meeting on GI endoscopy and the 10th SAGIM scientific session on gastrointestinal motility : Tromso, Norway, 2-5 June 1999 / Edited by R. H. Paulssen, J. Kjaeve, J. Florholmen Vol. 34 Suppl. 229 1999. Oslo : Scandinavian University Press, 1999. V, 18 s.   [1, z toho volných 0, prezenčně 1]