Fig. 1From: WASH Benefits Bangladesh trial: management structure for achieving high coverage in an efficacy trialLocation of the WASH Benefits Bangladesh Study. a A map of Bangladesh showing districts in which the WASH Benefits study was conducted; Tangail (blue), Gazipur (green), Kishoreganj (pink) and Mymensingh (yellow). b WASH Benefits study clusters (indicated with black dots) within the four districtsBack to article page