First Online: 7 November 2018
Ethics approval and consent to participate
: The study was approved by the Kenya Medical Research Institute’s (KEMRI) Ethics Review Committee (SSC No. 2607). Verbal informed consent was obtained from the study participants before the data collection.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.