Early-Pregnancy Vitamin D Deficiency and Risk of Preterm Birth Subtypes
To estimate the association between maternal 25-hydroxyvitamin D concentrations and risk of preterm birth subtypes. We performed a case-cohort study using data and banked samples from patients at a teaching hospital in Pittsburgh, Pennsylvania. Eligible participants were women with a prenatal aneupl...
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Veröffentlicht in: | Obstetrics and gynecology (New York. 1953) 2015-02, Vol.125 (2), p.439-447 |
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