1. Hubert Department of Global Health, Center for Global Safe Water, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
2. Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
3. Department of Environmental Health, Center for Global Safe Water, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
4. CARE Kenya, Kisumu, Kenya
5. Department of Global and Environmental Health, University of Florida, Gainesville, Florida, USA