Funding for this research was provided by:
Department for International Development (202945-1010)
Global Fund to Fight AIDS, Tuberculosis and Malaria (20168770)
Royal College of Obstetricians and Gynaecologists (EGA Hospital Charity Travelling Fellowship in Memory of Anne Boutwood)
Article History
Received: 23 February 2020
Accepted: 30 September 2020
First Online: 20 October 2020
Ethics approval and consent to participate
: This systematic review did not involve contact with any human participants, and therefore no ethical approval was needed. This study was conducted in compliance with the established ethical guidelines of the Declaration of Helsinki.
: Not applicable.
: The authors have no competing interests to declare.