Periconceptional Multivitamin Use and Infant Birth Weight Disparities
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PII: S1047-2797(09)00384-6
doi:10.1016/j.annepidem.2009.12.003
© 2010 Elsevier Inc. All rights reserved.
PII: S1047-2797(09)00384-6
doi:10.1016/j.annepidem.2009.12.003
© 2010 Elsevier Inc. All rights reserved.