1. Brighton and Sussex Medical School, Falmer Campus, Brighton, BN1 9PX, England.
2. Department of Biochemistry and Microbiology, University of Buea, Buea, Cameroon.
3. Federal Ministry of Health, Addis Ababa, Ethiopia.
4. Vector Control Division, Ministry of Health, Kampala, Uganda.
5. Malaria and Other Parasitic Diseases Division, Rwanda Biomedical Center, Kigali, Rwanda.
6. Lymphatic Filariasis Support Centre, Liverpool School of Tropical Medicine, Liverpool, England.