Statistics from Altmetric.com
For correspondence: Dr D K Raynor, University of Leeds, Leeds, UK,
Source of funding: National Institute for Health Research Health Technology Assessment Programme.
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.