作者: Lechaim Naggan , Brian MacMahon
DOI: 10.1056/NEJM196711232772104
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摘要: IT has been reported that the prevalence rate of anencephaly and spina bifida is very high in Ireland1 , 2 low Jewish population United States.3 These observations prompted present study differences rates between ethnic groups Boston, Massachusetts. The large Irish descent Boston provides basis for a effect migration; substantial allows re-examination earlier made Rhode Island, where quite small. Embryologic4 epidemiologic similarities,3 5 particular tendency both malformations to occur within . . .