Funding for this research was provided by:
Hartmann Müller-Stiftung für Medizinische Forschung
Center for Clinical Research, University and University Hospital Zurich
Text and Data Mining valid from 2019-04-13
Received: 14 September 2017
Accepted: 4 April 2019
First Online: 13 April 2019
Ethics approval and consent to participate
: The study was approved by the institutional review board (KEK-ZH-Nr. 2012–0506) and full individual informed consent was obtained by the participants.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.