Funding for this research was provided by:
European Research Council (AdG 695045)
Received: 11 February 2019
Accepted: 29 May 2019
First Online: 11 July 2019
Ethics approval and consent to participate
: Institutional review board was obtained (ethics committee at the Faculty of Medicine of the Ludwig-Maximilians-University Munich, project number 14-13). Written informed consent was waived by the review board. The study was conducted according to the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.