Funding for this research was provided by:
Magnus Bergvalls Stiftelse (2016-01377)
Alfred Österlunds Stiftelse
the Swedish Heart and Lung Association
Mats Kleebergs Stiftelse
Lions forskningsfond i Skåne
Text and Data Mining valid from 2018-06-20
Received: 17 November 2017
Accepted: 12 June 2018
First Online: 20 June 2018
Ethics approval and consent to participate
: A written informed consent was obtained from all participants and/or their guardian. The study was approved by the Medical Ethic Committee (Institutional Review Board) of Lund University (reference number 2011/434).
: Not applicable.
: The authors declare that they have no competing interests.
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