Comparison of methods for determining cr
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Lewis H. Nelson
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Article
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1981
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John Wiley and Sons
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English
โ 278 KB
## Abstract Determination of gestational age without an accurate last menstrual period is difficult. In the later stages of pregnancy, the correlation between fetal biparietal diameter (BPD), as determined by ultrasound, and gestational age is compromised by normal biologic variation in fetal growt