Funding for this research was provided by:
UBS Optimus Foundation
Received: 16 August 2017
Accepted: 12 January 2018
First Online: 27 February 2018
Ethics approval and consent to participate
: This study received clearance from the ethics committees of Basel (Ethikkommission beider Basel; reference no. 177/11) and Côte d’Ivoire (Comité National d’Ethique et de la Recherche; reference no. 13324 MSLS/CNER-P). Study participants were informed about the aims, procedures, and potential risks and benefits of the study. Participants and parents/guardians of minors provided written informed consent (signature of a witness for illiterate participants). It was emphasised that participation was voluntary and one could withdraw from the study at any time without further obligation. Each study participant was given a unique identification number to guarantee anonymity.
: Not applicable.
: The authors declare that they have no competing interests.
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