1. Department of Control of Neglected Tropical Diseases, World Health Organization, Geneva, Switzerland;
2. Task Force for Global Health, International Trachoma Initiative, Atlanta, Georgia;
3. Neglected Tropical Disease Control Program, Ministry of Health, Community Development, Gender, Elderly and Children, Dodoma, United Republic of Tanzania;
4. RTI International, Washington, District of Columbia;
5. Sightsavers, Haywards Heath, United Kingdom;
6. Expanded Special Project for Elimination of Neglected Tropical Diseases, World Health Organization Regional Office for Africa, Brazzaville, Congo;
7. United States Agency for International Development, Washington, District of Columbia;
8. Department of International Maternal and Child Health, Faculty of Medicine and Pharmacy, University of Uppsala, Uppsala, Sweden;
9. IMA World Health, Dar es Salaam, United Republic of Tanzania;
10. Clinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom