[1] UCL, Ctr Genet Anthropol, Dept Biol, London WC1E 6BT, England
[2] UCL, Ctr Genet Anthropol, Dept Anthropol, London WC1E 6BT, England
[3] Technion Israel Inst Technol, Bruce Rappaport Fac Med, IL-31096 Haifa, Israel
[4] Technion Israel Inst Technol, Res Inst, IL-31096 Haifa, Israel
[5] Rambam Med Ctr, IL-31096 Haifa, Israel
[6] Univ London Sch Oriental & African Studies, London WC1H 0XG, England
[7] Univ Oxford, Dept Zool, Oxford OX1 3PS, England