Janson, Christer http://orcid.org/0000-0001-5093-6980
Johannessen, Ane
Franklin, Karl
Svanes, Cecilie
Schiöler, Linus
Malinovschi, Andrei
Gislason, Thorarinn
Benediktsdottir, Bryndis
Schlünssen, Vivi
Jõgi, Rain
Jarvis, Deborah
Lindberg, Eva
Funding for this research was provided by:
Hjärt-Lungfonden
Swedish Asthma and Allergy Foundation
Forskningsrådet för Arbetsliv och Socialvetenskap
Bor Hjerpstedt Foundation
The Faculty of Health, Aarhus University, Denmark (240008)
The Wood Dust Foundation (444508795)
The Danish Lung Association
The Norwegian Research Council project
The Norwegian Asthma and Allergy Association
The Icelandic Research Council
the Estonian Science Foundation
Article History
Received: 16 November 2017
Accepted: 16 July 2018
First Online: 12 September 2018
Ethics approval and consent to participate
: Informed consent was obtained from each participant and the study was approved by regional committees of medical research ethics in Aarhus (ref number 2011/M-20110106), Bergen (ref number 42.91, 149.2000 and 2010/759), Reykjavik (ref number VSNb2011090016/03.15), Tartu (ref number UT REC 60/3–1998, UT REC 209 T-17, UT REC 225/M-24) and Uppsala (ref number 1990/257, 1998/495 and 2010/068).
: Not applicable.
: The authors declare that they have no competing interests.
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