Maternal serum median levels of alpha-foetoprotein, human chorionic gonadotropin & unconjugated estriol in second trimester in pregnant women from north-west India.

Indian J Med Res · 2013 · PMC3767258 · PMID 24056560

Europe PMC

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highly significantno p-value reported

However, the R 2 values as reported in literature for regression analysis, though highly significant, are usually low 13 .

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