Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1171894)
Center for Clinical and Translational Science (UL1TR001070)
Received: 11 June 2019
Accepted: 6 July 2020
First Online: 29 July 2020
Ethics approval and consent to participate
: Institutional review boards at The Ohio State University and the Hanoi School of Public Health approved the study, and women provided written consent before enrolling.
: Not applicable.
: The authors have no competing interests.