ACTA UNIVERSITATIS UPSALIENSIS : COMPREHENSIVE SUMMARIES OF UPPSALA DISSERTATIONS FROM THE FACULTY OF MEDICINE ; 277 605,807 EKBOM ANDERS Inflammatory bowel disease : occurrence, causation and cancer risk : [doctoral thesis] / Anders Ekbom ; Uppsala University. - Uppsala : Academiae Ubsalien-sis, 1990. - 42 s. ; 25 cm (Acta Universitatis Upsaliensis : Comprehensive Summaries of Uppsala Dissertations from the Faculty Of MEDICINE; ISSN 0282-7476 ; 277)