First Online: 7 November 2018
Ethics approval and consent to participate
: The study protocol was approved by the Kenya Medical Research Institute’s Ethics Review Committee (SSC No. 2607). Consent was sought from the household heads. Informed written consent was sought from all eligible participants before interview and examination.
: 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.