Early-Pregnancy Vitamin D Deficiency and Risk of Preterm Birth Subtypes

Bodnar, Lisa M ; Platt, Robert W ; Simhan, Hyagriv N

Obstetrics and gynecology (New York. 1953), 2015-02, Vol.125 (2), p.439-447 [Periódico revisado por pares]

United States: by The American College of Obstetricians and Gynecologists

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