Funding for this research was provided by:
Seventh Framework Programme (306090)
Received: 26 June 2019
Accepted: 18 July 2020
First Online: 1 August 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Liverpool School of Tropical Medicine (Research protocol 14.007), the South Nation Nationalities and Peoples Region Health Bureau Research and Technology Transfer Core Process of South Ethiopia in Ethiopia, the Kenya Medical Research Institute Ethics and Review Committee in Kenya, the National Health Sciences Research Committee in Malawi, and the Institutional Review Joint-Board of the Faculty of Medicine of the University Eduardo Mondlane and Maputo Central Hospital in Mozambique.
: Not applicable
: The authors declare that they have no competing interests.