Centers for Disease Control and Prevention
ABSTRACT
Background: The relationship between arsenic and birth weight is not well understood.
Objective: To evaluate the causal relationship between prenatal arsenic exposure and birth weight considering the potential mediation effects of gestational age and maternal weight gain during pregnancy using structural equation models (SEMs).
Methods: A prospectively enrolled cohort of pregnant women was recruited in Bangladesh from 2008-2011. Arsenic was measured in personal drinking water at the time of enrollment (gestational age ................
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