PRACE DOKTORSKIE - SZWECJA 549,476 ENGSTRAND LARS Helicobacter pylori : new diagnostic tools. Clinical and experimental studies on local and systemic immune response : [doctoral thesis] /by Lars Engstrand. - Uppsala: Academiae Ubsaliensis, 1992. - [3], 54 s. : il. ; 23 cm (Acta Universitatis Upsaliensis Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine ISSN 0282-7476 ; 344) ISBN 91-554-2892-4