[1] Univ London London Sch Hyg & Trop Med, Fac Infect & Trop Dis, London WC1E 7HT, England
[2] London Ctr Neglected Trop Dis Res, London, England
[3] Int Trachoma Initiat, Task Force Global Hlth, Decatur, GA USA
[4] Univ Cape Town, Div Ophthalmol, Kilimanjaro Ctr Community Ophthalmol, ZA-7925 Cape Town, South Africa
[5] Sightsavers, Airport Residential Area, Accra, Ghana
[6] Community Eye Hlth Consultancy, Addis Ababa, Ethiopia
[7] Fred Hollows Fdn Ethiopia, Addis Ababa, Ethiopia
[8] Berhan Publ Hlth & Eye Care Consultancy, Addis Adaba, Ethiopia
[9] Int Trachoma Initiat, Ethiopia Off, Addis Ababa, Ethiopia
[10] Univ London London Sch Hyg & Trop Med, MRC Trop Epidemiol Grp, London WC1E 7HT, England
[11] Light World, Addis Ababa, Ethiopia
[12] Michael Dejene Publ Hlth Consultancy Serv, Addis Ababa, Ethiopia
[13] Emory Univ, Carter Ctr, Atlanta, GA 30322 USA
[14] Oromia Reg Hlth Bur, Addis Ababa, Ethiopia
[15] Int Trachoma Initiat, Reg Off Africa, Addis Ababa, Ethiopia
[16] Water Aid, London, England
[17] Sightsavers, Haywards Heath, W Sussex, England
[18] Fred Hollows Fdn, Rosebery, NSW, Australia
[19] Univ Calif San Francisco, Francis I Proctor Fdn, San Francisco, CA 94143 USA
[20] Helen Keller Int, New York, NY USA
[21] World Hlth Org, Prevent Blindness & Deafness, Geneva, Switzerland
[22] Ctr Dis Control & Prevent, Atlanta, GA USA
[23] Sightsavers Nigeria, Kaduna, Nigeria
[24] Univ Jos, Dept Ophthalmol, Jos, Nigeria
[25] Johns Hopkins Sch Med, Wilmer Inst, Dana Ctr Prevent Ophthalmol, Baltimore, MD USA
[26] ORBIS Int Ethiopia, Addis Ababa, Ethiopia
[27] Univ Melbourne, Melbourne Sch Populat & Global Hlth, Melbourne, Vic 3010, Australia
[28] Emory Eye Ctr, Atlanta, GA USA