1. Wolfson Wellcome Biomedical Laboratories, Department of Zoology, Natural History Museum, London, United Kingdom.
2. Institute of Genetics, School of Biology, University of Nottingham, Nottingham, United Kingdom.
3. Chimpanzee Sanctuary and Wildlife Conservation Trust (CSWCT), Entebbe, Uganda.
4. Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands.
5. Vector Control Division, Ministry of Health, Kampala, Uganda.
6. Department of Medical Microbiology, The Royal Free Hospital, London, United Kingdom.