Buckingham, Susan
Kendall, Marilyn
Ferguson, Susie
MacNee, William
Sheikh, Aziz
White, Patrick
Worth, Allison
Boyd, Kirsty
Murray, Scott A
Pinnock, Hilary
Article History
Received: 4 November 2014
Revised: 6 January 2015
Accepted: 17 January 2015
First Online: 16 April 2015
Competing interests
: AS is the Joint Editor-in-Chief of, and HP is an Associate Editor of, <i>npj Primary Care Respiratory Medicine</i>; neither were involved in the editorial review of, nor the decision to publish, this article. The authors declare no conflict of interest.