Funding for this research was provided by:
National Institute of Environmental Health Sciences (Z01-ES044005)
National Cancer Institute (P01 CA15429, U54CA163303)
Received: 17 June 2018
Accepted: 25 January 2019
First Online: 13 February 2019
Ethics approval and consent to participate
: Each registry and the Statistical Coordinating Center (SCC) received institutional review board approval for either passive or active consenting processes or a waiver of consent to enroll participants, link data, and perform analytic studies. All procedures are Health Insurance Portability and Accountability Act (HIPAA) compliant and all registries and the SCC have received a Federal Certificate of Confidentiality and other protection for the identities of women, physicians, and facilities who are subjects of this research.
: Not applicable
: The authors declare that they have no competing interests.
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