Funding for this research was provided by:
Eunice Kennedy Shriver National Institute of Child Health and Human Development
Received: 26 October 2020
Accepted: 28 October 2020
First Online: 17 December 2020
Ethics approval and consent to participate
: At each site, institutional review boards or ethics committess approved the study. All women provided written informed consent before the start.
: The article was approved for publication by NICHD through its clearance mechanism.
: The authors have no competing interest.