Received: 22 December 2019
Accepted: 18 September 2020
First Online: 7 October 2020
Ethics approval and consent to participate
: The study protocol was approved by Zanzibar’s Medical Ethical Research Committee (ZAMREC, reference number: ZAMREC/0002/JUN/17). With ZAMREC’s approval, written or, in the case of illiteracy, oral informed consent was obtained from all participants, primarily of the three main participants and heads of the respective households.
: All participating individuals gave their verbal consent for publication.
: Tarek Meguid is Editorial Board Member of BMC Pregnancy and Childbirth. The other authors declare that they have no competing interests.