- Correspondence to Dr Cornelia H M van Jaarsveld, Department of Primary Care and Public Health Sciences, Capital House, King's College London, 42 Weston St, London SE1 3QD, UK;
- Received July 10, 2014
- Revised December 8, 2014
- Accepted December 9, 2014
- First published January 29, 2015.
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.