Ethics approval and consent to participate
The study was approved by The Gambia Government/MRCG Joint ethics committee (SCC 1620). Written informed consent was obtained by means of participant dated signature and dated signature of the person who administered the ICF. In cases of illiterate participants, her left thumb impression was obtained and this procedure to take the consent of illiterate people was approved by The Gambia Government/MRCG Joint ethics committee (SCC 1620). All methods were performed in accordance with the Declaration of Helsinki’s guidelines.