Water, sanitation, and hygiene for control of trachoma in Ethiopia (WUHA): a two-arm, parallel-group, cluster-randomised trial oleh Solomon Aragie, PhD, Dionna M Wittberg, MPH, Wondyifraw Tadesse, MPH, Adane Dagnew, BSc, Dagnachew Hailu, BSc, Ambahun Chernet, MSc, Jason S Melo, MPH, Kristen Aiemjoy, PhD, Mahteme Haile, PhD, Taye Zeru, MPH, Zerihun Tadesse, MD, Sarah Gwyn, MSc, Diana L Martin, PhD, Benjamin F Arnold, PhD, Matthew C Freeman, ProfPhD, Scott D Nash, PhD, E Kelly Callahan, MPH, Travis C Porco, ProfPhD, Thomas M Lietman, ProfMD, Jeremy D Keenan, ProfMD