1. UNICEF/UNDP/World Bank/WHO Special Programme for Research & Training in Tropical Diseases (TDR); Geneva Switzerland
2. Methodology and Statistics Unit; Centre de Recherche Public - Santé (CRP-Santé); Strassen Luxembourg
3. Department of Clinical Sciences; Liverpool School of Tropical Medicine; Liverpool UK
4. Department of Control of Neglected Tropical Diseases; World Health Organization (WHO); Geneva Switzerland