Funding for this research was provided by:
Japan Society for the Promotion of Science
Received: 29 August 2019
Accepted: 23 December 2019
First Online: 15 January 2020
Ethics approval and consent to participate
: The study protocol was approved by the ethics committee for epidemiological research of Hiroshima University (Certificate E-1257) and the ethics committee of the ministry of health in Burkina Faso (Deliberation CERS-2018-02-023). All participants signed an informed consent before they can enter the study. Participants tested positive to hepatitis infection were referred to a specialized centre.
: Not applicable.
: The authors declare that they have no competing interests.