ABSTRACTS 300.423 Abstracts World Congresses of Gastroenterology September 6-11, 1998, Vienna, Austria : 11th World Congress of Gastroenterology : 9th World Congress of Digestive Endoscopy : 6th World Congress of Colo-Proctology / guest ed. Peter Ferenci. - Basel [etc.] : S. Karger Medical and Scientific Publishers, 1998. - [6], 819 s. ; 28 cm. - (Digestion ISSN 0012-2823 ; vol. 5 9, suppl. 3) Indeks