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gastrointestinal malformations

Acta geneticae medicae et gemellologiae: twin research (1)

International Soc for Twin Studies (1)

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Congenital Anomalies in Twins in Northern Ireland. I: Anomalies in General and Specific Anomalies Other Than Neural Tube Defects and of the Cardiovascular System, 1974–1979
J. Little, N.C. Nevin
Journal:

Acta geneticae medicae et gemellologiae: twin research / Volume 38 / Issue 1-2 / April 1989

Published online by Cambridge University Press:

01 August 2014, pp. 1-16

Print publication:

April 1989
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Data are presented from a large-scale population-based study in Northern Ireland, in which multiple sources of ascertainment were used. As found in other studies, the overall prevalence at birth of congenital anomalies amogst twins (285.4/10,000) was somewhat higher than the rate amongst singletons (241.8/10,000). Unlike in other studies, however, the rate amongst twins of like sex (287.8/10,000) was not markedly higher than that amongst twins of unlike sex (252.3/10,000). Problems of comparison between series are discussed.