Received: 7 October 2021
Accepted: 13 April 2022
First Online: 21 April 2022
: This research was performed in accordance with the Declaration of Helsinki and approved by the National Institute for Medical Research with the certificate number IX/2735 and the Kilimanjaro Christian Medical University College Ethics Committee, certificate number 2225. Permission to visit primary schools was granted by the regional medical officer, districts education officers, and school authorities. The research team sent children home with the information sheets for parents to review and provide permission to enrol their children. We encountered difficulties as some parents provided verbal consent and didn’t return the forms. We consulted the ethics committee and they waived parental consent, as the study did not involve invasive procedures. The ethics committee granted permission for headteachers to consent for children. Therefore, headteachers provided informed consent and children were asked for a written assent prior to data collection.
: Not applicable.
: The authors declare no competing interests.