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. 2007 Jan 16;115(3):435–439. doi: 10.1289/ehp.9566

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Prospective cohort study in Morelos, Mexico, 2001–2005: recruitment flow chart.

*Average time between study recruitment and time to pregnancy: 8 months. **Four neonatal deaths, six children outcome of twin pregnancies, one child born at 25 weeks, one child diagnosed with congenital hypothyroidism, one child diagnosed with severe cerebral atrophy, and 15 children diagnosed with with perinatal asphyxia and/or birth weight < 2 kg and maternal age ≤ 15 years. ***Only one Bayley test and/or no DDE maternal levels during pregnancy.