title: [The 6th World Gastroenterological Congress in Madrid, 5-9 June 1978].
mesh_terms: D003226:Congresses as Topic; D005762:Gastroenterology; D006801:Humans; D007391:International Cooperation; D013030:Spain
vernacular_title: VI. Svetový gastroenterologický kongres v Madride 5.-9.6. 1978.