- Correspondence to Dr Werner Leber, Centre for Primary Care and Public Health, Queen Mary University of London, London, E1 2AB UK;
- Received August 12, 2015
- Accepted August 17, 2015
- First published October 20, 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.