Study design and setting
The study was a cluster-randomized controlled trial implemented in the catchment areas of 51 CHW WBOTs in Greater Tzaneen and Greater Giyani subdistricts, Mopani District, Limpopo Province, South Africa. This trial was registered in the South African Clinical Trials Registry (SANCTR 4407) and the Pan-African Clinical Trials Registry (PACTR 201710002683810; 