JAMA : the journal of the American Medical Association
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JAMA
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Randomized Controlled Trial Clinical Trial
The effect of zinc supplementation on pregnancy outcome.
To evaluate whether zinc supplementation during pregnancy is associated with an increase in birth weight. ⋯ Daily zinc supplementation in women with relatively low plasma zinc concentrations in early pregnancy is associated with greater infant birth weights and head circumferences, with the effect occurring predominantly in women with a body mass index less than 26 kg/m2.