1. Department of Anthropology; University of Toronto; Toronto M5S 2S2 Canada
2. Department of Archaeology; University of Cape Town; Rondebosch 7701 South Africa
3. Department of Laboratory Medicine and Pathobiology and Institute for Biomaterials and Biomedical Engineering; University of Toronto; Toronto M5T 3L9 Canada
4. Mount Sinai Hospital; Lunenfeld-Tanenbaum Research Institute; Toronto M5T 3H7 Canada
5. Division of Anatomy and Histology, Department of Biomedical Sciences; Stellenbosch University; Cape Town 8000 South Africa