Randomization Stratified randomization will be used to select 20 clusters among the eligible 38 study clusters in rural and urban settings in the four sub-districts in a 1:1 ratio for the intervention and the control arms. Clusters will be randomized to avoid the resentment or contamination that might occur as a result of delivering the intervention to some families but not others in the community. Randomization will be done in a Random Allocation Ceremony led by the research team and attended by the chiefs from all participating villages as well as staff from the implementing agency. The ceremony will follow a step-by-step lottery and documentation procedure that includes the use of 20 sequentially numbered, opaque, sealed and stapled envelopes independently prepared by the lead investigator. Aluminium foil inside the envelope will render the envelope impermeable to intense light. The ceremony will be video-recorded. Eligible families will be identified before randomly assigning villages.