{"title":"Twinning and anencephalus occurrence in relation to fetus-fetus interaction.","authors":"J M Elwood","doi":"10.1136/jech.30.1.29","DOIUrl":null,"url":null,"abstract":"<p><p>The hypothesis proposed by Knox (1970) that an anencephalic fetus arises from a fetus-fetus interaction between two dizygous twins predicts that the twinning rate, the population incidence of anencephalus, and the female proportion of anencephalics in a population should be positively interrelated. These associations were tested using Canadian data during a long period of time and over a large geographical area. The results did not support the hypothesis.</p>","PeriodicalId":75622,"journal":{"name":"British journal of preventive & social medicine","volume":"30 1","pages":"29-31"},"PeriodicalIF":0.0000,"publicationDate":"1976-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1136/jech.30.1.29","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"British journal of preventive & social medicine","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1136/jech.30.1.29","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 8
Abstract
The hypothesis proposed by Knox (1970) that an anencephalic fetus arises from a fetus-fetus interaction between two dizygous twins predicts that the twinning rate, the population incidence of anencephalus, and the female proportion of anencephalics in a population should be positively interrelated. These associations were tested using Canadian data during a long period of time and over a large geographical area. The results did not support the hypothesis.
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