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Figure 1. Geometric mean insecticide levels in (A) maternal personal air samples collected over 48 hr during the third trimester of pregnancy and (B) in umbilical cord blood samples at delivery stratified by whether the delivery took place before or after 1 January 2001. *p ≤ 0.01 (independent t-test).. From: Prenatal Insecticide Exposures and Birth Weight and Length among an Urban Minority Cohort.
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