The length of pregnancy: An echographic
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Tullia Todros; Guglielmo Ronco; Daniela Lombardo; Leone Gagliardi
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Article
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1991
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John Wiley and Sons
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English
โ 332 KB
A study of 998 pregnant women was conducted to estimate the random errors in dating pregnancy by menstrual history and by ultrasound measurements of the fetus (crown-rump length or biparietal diameter before 20 weeks, menstrual age) as well as the biological variability of pregnancy length. The latt