Hemon D, Berger C, Lazar P
Rev Epidemiol Sante Publique. 1979 Sep 18;27(2):91-9.
The hypothesis of the existence of spatial variations of spontaneous abortion rates has two logical consequences on dizygotic twinning rates: they must be heterogeneously distributed and show a positive correlation with natality. French data available on dizygotic twinning rates from 1950 to 1974 are in agreement with both implications. Although alternative explanations are possible, these findings do reinforce the relevance of dizygotic twinning rate variations as a tool for the assessment of reproduction failures.
自然流产率存在空间差异这一假说，对异卵双胞胎出生率有两个合乎逻辑的影响：它们必然呈非均匀分布，并与出生率呈正相关。1950年至1974年法国有关异卵双胞胎出生率的现有数据与这两个推论均相符。尽管可能存在其他解释，但这些发现确实强化了异卵双胞胎出生率变化作为评估生殖失败工具的相关性。
