van Gemert, Frederik
Chavannes, Niels https://orcid.org/0000-0002-8607-9199
Kirenga, Bruce
Jones, Rupert
Williams, Sian
Tsiligianni, Ioanna
Vonk, Judith
Kocks, Janwillem https://orcid.org/0000-0002-2760-0693
de Jong, Corina
van der Molen, Thys
Article History
Received: 10 September 2015
Revised: 6 June 2016
Accepted: 17 June 2016
First Online: 1 September 2016
Competing interests
: N.C., I.T. and J.K. are Associate Editors of <i>npj Primary Care Respiratory Medicine</i>, but were not involved in the editorial review of, nor the decision to publish this article. The other authors declare no conflict of interest.