Funding for this research was provided by:
Deutsches Zentrum für Lungenforschung
Text and Data Mining valid from 2018-04-19
Received: 8 February 2018
Accepted: 2 April 2018
First Online: 19 April 2018
Ethics approval and consent to participate
: The study was approved by the local ethics committee of the Ludwig-Maximilians University of Munich, Germany (333-10), and all participants gave written informed consent.
: The authors declare that they have no competing interests.
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