PRACE DOKTORSKIE - SZWECJA 551,142 JENSEN JÖRN The efficiency of double-contrast barium enema examination and rectosigmoidoscopy in the detection of colorectal neoplasms ; a study of work-up of screened subjects with a positive Hemoccult II test : [akademisk avhandling] / by Jörn Jensen ; from the Departments of Surgery II and Diagnostic Radiology Sahlgrenska Hospital, University of Göteborg, Sweden. - Göteborg ; [University], 1993. - 110 s. wiele liczb. : wykr. ; 25 cm Zawiera 6 prac wspólaut.