Funding for this research was provided by:
Klaus Tschira Stiftung
Horizon 2020 (689238)
Text and Data Mining valid from 2018-07-03
Received: 31 January 2018
Accepted: 25 June 2018
First Online: 3 July 2018
Ethics approval and consent to participate
: The study procedures were approved by the local institution review boards, i.e. in Stuttgart: Medical Ethical Committee at the University Medical Center Tübingen, approval date 07/04/2016, 033/2016BO2; Amsterdam: Medical Ethical Committee, VU University Medical Center, approval date 13/04/2016, NL56456.029.16; Trondheim: REC central, approval date 29/04/2016, central midt 2016/48; and Heidelberg: Medical Ethical Committee of the Faculty of Behavioural and Cultural Studies of Heidelberg University, approval date 20/06/2016.Written informed consent from participants were obtained in all four study centers prior to participation.
: The authors declare that they have no competing interests.
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