Funding for this research was provided by:
Region Skåne (REGSKANE-826071)
Lunds Universitet (Dnr F: 2014/354)
Received: 23 March 2020
Accepted: 3 June 2020
First Online: 12 June 2020
Ethics approval and consent to participate
: The study was approved by the National Health Ethics Committee in Guinea-Bissau (010/CNES/INASA/2014 and 039/CNES/INASA/2016) and the Regional Ethical Review Board, Lund University, Sweden (Dnr 2014/424). All participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.