Text and Data Mining valid from 2018-10-01
Received: 26 April 2018
Accepted: 19 August 2018
First Online: 1 October 2018
Ethics approval and consent to participate
: The study has been approved by the local medical ethics committees (of Leiden University Medical Center, University of Padua, University of Gothenburg, and Diakonhjemmet Hospital).
: All patients provided written informed consent.
: The authors declare that they have no competing interests.
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