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In 22 of these patients with a history of a perineal tear or episiotomy, 21 (95%) had a sphincter defect. Sphincter defects were commonly located at the level of the midanal canal.<\/jats:p>","DOI":"10.1136\/gut.34.5.685","type":"journal-article","created":{"date-parts":[[2007,9,18]],"date-time":"2007-09-18T17:41:31Z","timestamp":1190137291000},"page":"685-688","source":"Crossref","is-referenced-by-count":126,"title":["The prevalence of anal sphincter defects in faecal incontinence: a prospective endosonic study."],"prefix":"10.1136","volume":"34","author":[{"given":"K I","family":"Deen","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D","family":"Kumar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J G","family":"Williams","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J","family":"Olliff","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M R","family":"Keighley","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[1993,5,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1007\/BF02554724","article-title":"Sphincter repair for faecal incontinence","volume":"32","author":"Yoshioka, K.; Keighley, M.R.","year":"1989","unstructured":"Yoshioka K, Keighley MR. 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