Abstracts of papers presented at the 24th Scandinavian Conference on Gastroenterology and the 15th Scandinavian Meeting on Gastrointestinal Endoscopy, Aalborg, Denmark, 5-8 June 1991 / edit. J. Fallingborg ... [et al.] Vol. 26 Suppl. 183 1991. Oslo : Universitetsforlaget, 1991. 120 s. [1, z toho volných 0, prezenčně 1]