Funding for this research was provided by:
Sanitation and Hygiene Applied Research for Equity (ITDCHA2310)
Received: 30 May 2018
Accepted: 25 April 2019
First Online: 14 May 2019
Ethics approval and consent to participate
: No ethical approval was needed for the process of the creation of this intervention. The formative research and trial were approved by the London School of Hygiene and Tropical Medicine Research Ethics Committee (refs: 11714, 12157) and the University of Zambia Biomedical Research Ethics Committee (refs: 023–06-16, 002–02-17).
: Not applicable.
: The authors declare that they have no competing interests.
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