Funding for this research was provided by:
Eunice Kennedy Shriver National Institute of Child Health and Human Development (K24HD069408, R01HD034568)
National Institutes of Health (UG3OD023286)
National Institute of Environmental Health Sciences (K23ES024803, R01ES021447)
U.S. Environmental Protection Agency (RD-834798)
Received: 15 August 2017
Accepted: 11 February 2018
First Online: 20 February 2018
Ethics approval and consent to participate
: All women provided written consent, and the Institutional Review Board of Harvard Pilgrim Health Care approved the study.
: Not applicable.
: The authors declare that they have no competing interests.
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