547,352 WHAT IS NEW What is new and what is established in inflammatory bowel disease : Proceedings of the Athens Intenatio- nal Meeting on Inflammatory Bowel Diseases, Athens, 19-23 April, 1989 / ed. by A.A. Anagnostides, H.J.F. Hodgson and L. Probert. - [Oslo] : Universitetsforlaget 1989. - 182 s. j 25 cm (Scandinavian Journal of Gastroenterology ISSN 0085-5928 ; vol. 24, suppl. 158)