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. 2021 Aug 30;99(11):762–772A. doi: 10.2471/BLT.21.285915

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(c) 2021 The authors; licensee World Health Organization.

This is an open access article distributed under the terms of the Creative Commons Attribution IGO License (http://creativecommons.org/licenses/by/3.0/igo/legalcode), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. In any reproduction of this article there should not be any suggestion that WHO or this article endorse any specific organization or products. The use of the WHO logo is not permitted. This notice should be preserved along with the article's original URL.

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Fig. 1 — Flowchart of trial stages, and clusters and households included in the WASH Upgrades for Health in Amhara trial, Ethiopia, 9 November 2015 to 5 March 2019