Electronic data

• GShs_drj8feb2016ACC

  Rights statement: This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

  Accepted author manuscript, 2 MB, PDF document

  Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License

Links

• https://www.journalslibrary.nihr.ac.uk/hsdr/hsdr04250/#/abstract

  Final published version

Text available via DOI:

• https://doi.org/10.3310/hsdr04250

  Final published version