1. Department of Ophthalmology, Usmanu Danfodiyo University, Sokoto, Nigeria
2. Helen Keller International, Nigeria Country office, Abuja, Nigeria
3. Helen Keller International, Regional Office for Africa, Dakar, Senegal
4. Sightsavers Nigeria Country Office, Kaduna, Nigeria
5. Federal Ministry of Health, Abuja, Nigeria
6. Ministry of Health, Maiduguri, Nigeria
7. International Trachoma Initiative, Task Force for Global Health, Decatur, Georgia, USA
8. Sightsavers, Haywards Heath, UK
9. Department of Control of Neglected Tropical Diseases, World Health Organization, Geneva, Switzerland
10. Clinical Research Department, London School of Hygiene & Tropical Medicine, London, UK
11. London Centre for Neglected Tropical Disease Research, London, UK
12. Department of Ophthalmology, College of Health Sciences, University of Jos, Jos, Nigeria