1. Directorate-General for the Fight against Communicable Diseases and HIV/AIDS, Ministère de la Santé et de la Population, Brazzaville, Congo
2. Organisation pour la prevention de la cécité, Paris, France
3. Sightsavers, Haywards Heath, UK
4. Task Force for Global Health, Decatur, GA, USA
5. Clinical Research Department, London School of Hygiene & Tropical Medicine, London, UK
6. Department of Control of Neglected Tropical Diseases, World Health Organization, Geneva, Switzerland