Received: 29 January 2019
Accepted: 9 August 2019
First Online: 5 September 2019
Ethics approval and consent to participate
: This study was approved by the “Comité de Bioéthique pour la Recherche en Santé (CBRS)” (Bioethics Committee for Health Research) from the Togo Ministry of Health (CBRS No. 18/2017/CBRS of June 22nd 2017). Potential participants were told about the study purpose and procedures, potential risks and protections, and compensation. Written informed consent was obtained prior to participation.
: Not applicable.
: The authors declare that they have no competing interests.