Schermer, Tjard R.
Vatsolaki, Maria
Behr, Robbert
Grootens, Joke
Cretier, Riet
Akkermans, Reinier
Denis, Joke
Poels, Patrick
van den Bemt, Lisette http://orcid.org/0000-0002-3771-8273
Article History
Received: 7 September 2017
Revised: 23 March 2018
Accepted: 18 April 2018
First Online: 22 May 2018
Competing interests
: T.S. has received research grants for studies in chronic respiratory diseases from GlaxoSmithKline, Novartis and Boehringer Ingelheim and is a member of the primary care scientific advisory board of Boehringer Ingelheim. Moreover, he is an editorial board member of the <i>npj Primary Care Respiratory Medicine</i>. The remaining authors declare no competing interest.