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The origin of the small ring chromosome could not be determined and it is difficult to relate the phenotype of the infant to the cytogenetic findings.<\/jats:p>","DOI":"10.1136\/jmg.17.1.59","type":"journal-article","created":{"date-parts":[[2008,11,10]],"date-time":"2008-11-10T14:52:06Z","timestamp":1226328726000},"page":"59-61","source":"Crossref","is-referenced-by-count":6,"title":["Agenesis of the corpus callosum with mosaicism 46,XY\/47,XY, extra ring chromosome."],"prefix":"10.1136","volume":"17","author":[{"given":"G","family":"Zamboni","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"F","family":"Bernardi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C","family":"Danesino","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"U M","family":"del Majno","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G","family":"Beghini","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"B","family":"Dalla Bernardina","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[1980,2,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1268","DOI":"10.1126\/science.1257746","article-title":"High resolution of human chromosomes","volume":"191","author":"Yunis, J.J.","year":"1976","unstructured":"Yunis JJ. 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Riv Ital Pediatr 1977;3: 119-22.","journal-title":"Riv Ital Pediatr"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"447","DOI":"10.1136\/jmg.14.6.447","article-title":"Supernumerary small ring chromosome","volume":"14","author":"Kaffe, S.; Kim, H.J.; Hsu, L.Y.F.; Brill, C.B.; Hirschhorn, K.","year":"1977","unstructured":"Kaffe S, Kim HJ, Hsu LYF, Brill CB, Hirschhorn K. Supernumerary small ring chromosome. J Med Gene: 1977;14:447-51.","journal-title":"J Med Gene"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"383","DOI":"10.1136\/jmg.14.5.383","article-title":"Leprechaunism with mosaicism 46, XX\/47, XX extra ring chromosome","volume":"14","author":"Ventruto, V.; Sebastio, L.; Sebastio, G.; De Masi, R.V.; Vota, U.; Farina, L.; Festa, B.","year":"1977","unstructured":"Ventruto V, Sebastio L, Sebastio G, De Masi RV, Vota U, Farina L, Festa B. Leprechaunism with mosaicism 46,XX\/47,XX extra ring chromosome. 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