Effects of water quality, sanitation, handwashing, and nutritional interventions on diarrhoea and child growth in rural Kenya: a cluster-randomised controlled trial oleh Clair Null, PhD, Christine P Stewart, PhD, Amy J Pickering, PhD, Holly N Dentz, MPH, Benjamin F Arnold, PhD, Charles D Arnold, MS, Jade Benjamin-Chung, PhD, Thomas Clasen, ProfPhD, Kathryn G Dewey, ProfPhD, Lia C H Fernald, ProfPhD, Alan E Hubbard, PhD, Patricia Kariger, PhD, Audrie Lin, PhD, Stephen P Luby, MD, Andrew Mertens, MS, Sammy M Njenga, PhD, Geoffrey Nyambane, MA, Pavani K Ram, MD, John M Colford, Jr, ProfMD