About the Authors
School of Civil Engineering, University of Leeds, Leeds, United Kingdom
Water Supply and Sanitation Collaborative Council, Geneva, Switzerland
Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
The authors have declared that no competing interests exist.
ICMJE criteria for authorship read and met: DM JL BS DT. Agree with the manuscript's results and conclusions: DM JL BS DT. Wrote the first draft of the paper: DM. Contributed to the writing of the paper: JL BS DT. The article was jointly written by all the named authors.