1. School of Natural Sciences and Psychology; Liverpool John Moores University; Liverpool, L3 3AF United Kingdom
2. ADaPt Project, PAVE Research Group, Department of Archaeology and Anthropology; University of Cambridge; Cambridge, CB2 3QG United Kingdom
3. UCL Great Ormond Street Institute of Child Health; London, WC1N 1EH United Kingdom
4. Department of Anthropology; University of Western Ontario; London Ontario, N6A 3K7 Canada