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Contents: Original Research

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

Bodnar, Lisa M. PhD, RD; Platt, Robert W. PhD; Simhan, Hyagriv N. MD

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doi: 10.1097/AOG.0000000000000621
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© 2015 by The American College of Obstetricians and Gynecologists. Published by Wolters Kluwer Health, Inc. All rights reserved.