Oberwalder, M Endosonographic image of a retrorectal bowel duplication: report of a case. [electronic resource] - Diseases of the colon and rectum Jun 1998 - 802-3 p. digital Publication Type: Case Reports; Journal Article ISSN: 0012-3706 Standard No.: 10.1007/BF02236274 doi Subjects--Topical Terms: AdultEndosonographyFemaleHumansRectum--abnormalitiesUltrasonography, Interventional