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The purpose of the current report is to document the occurrence of OEIS in sibs from separate pregnancies and suggest that some cases may have a genetic basis.<\/jats:p>","DOI":"10.1136\/jmg.29.10.730","type":"journal-article","created":{"date-parts":[[2008,11,10]],"date-time":"2008-11-10T15:23:16Z","timestamp":1226330596000},"page":"730-732","source":"Crossref","is-referenced-by-count":97,"title":["The OEIS complex (omphalocele-exstrophy-imperforate anus-spinal defects): recurrence in sibs."],"prefix":"10.1136","volume":"29","author":[{"given":"N M","family":"Smith","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H M","family":"Chambers","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M E","family":"Furness","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E A","family":"Haan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[1992,10,1]]},"reference":[{"key":"ref_1","first-page":"253","article-title":"The OEIS complex (omphalocele, exstrophy, imperforate anus, spinal defects)","volume":"14","author":"Carey, J.C.; Greenbaum, B.; Hall, B.D.","year":"1978","unstructured":"Carey JC, Greenbaum B, Hall BD. 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