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The probability of monozygotic trisomy 18 twinning and the mechanisms for phenotypic discordance in trisomic twins is discussed.<\/jats:p>","DOI":"10.1136\/jmg.27.10.640","type":"journal-article","created":{"date-parts":[[2008,11,10]],"date-time":"2008-11-10T15:11:11Z","timestamp":1226329871000},"page":"640-642","source":"Crossref","is-referenced-by-count":23,"title":["Monozygotic twins with trisomy 18: a report of discordant phenotype."],"prefix":"10.1136","volume":"27","author":[{"given":"J S","family":"Schlessel","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"W T","family":"Brown","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A","family":"Lysikiewicz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R","family":"Schiff","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A L","family":"Zaslav","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[1990,10,1]]},"reference":[{"key":"ref_1","first-page":"16","article-title":"Trisomy 18 syndrome. 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