Received: 25 January 2021
Accepted: 7 June 2021
First Online: 10 August 2021
Change Date: 7 October 2021
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/S12889-021-11759-9
: The study protocol was reviewed and approved by the Sierra Leone Ethics and Scientific Review Committee (SLESRC) at the Ministry of Health and Sanitation (MoHS) and King’s College London (reference: HR-17/18–7298). Consent to do the study in each area was sought from chiefs in each sub-district or village prior to data collection. <i>Written informed consent was obtained from every participant, and a literate witness assisted in cases of illiteracy. Where no signature was possible, thumbprints were used.</i> Data used in the analysis was anonymised.
: Not applicable for the current analysis.
: The authors declare they have no competing interest.