- Correspondence to Fernando G Beltrami, University of Cape Town, Department of Human Biology, Newlands 7700, South Africa;
- Received June 10, 2011
- Accepted October 18, 2011
- First published December 12, 2011.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.