1. Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK.
2. School of Anthropology and Museum Ethnography, University of Oxford, Oxford OX2 6PE, UK.
3. Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK.
4. MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, UK.
5. Biological Anthropology, Department of Archaeology and Anthropology, University of Cambridge, Cambridge CB2 1QH, UK.
6. School of Archaeology and Anthropology, Australian National University, Canberra, ACT 2601, Australia.
7. International Health Research, Curtin University, Perth, WA 6845, Australia.
8. Papua New Guinea Institute of Medical Research, Post Office Box 60, Goroka, Papua New Guinea.
9. Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK.