- Correspondence to Dr Catharine R Gale, MRC Lifecourse Epidemiology Unit, Southampton General Hospital, Southampton, SO16 6YD, UK;
- Received September 1, 2014
- Revised December 22, 2014
- Accepted December 30, 2014
- First published February 3, 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.