[1
] UCL Institute for Environmental Design and Engineering, Bartlett School for Energy,
Environment and Resources, University College London
[2
] Population, Policy and Practice, UCL Great Ormond Street Institute of Child Health,
University College London
[3
] Department of Epidemiology, Mailman School of Public Health, Columbia University
[4
] Engineering for International Development Centre; Civil, Environmental and Geomatic
Engineering, University College London
[5
] Aceso Global Health Consultants Ltd