Received: 10 December 2019
Accepted: 13 July 2020
First Online: 23 July 2020
Ethics approval and consent to participate
: The study was approved by the ethics committee of Innsbruck Medical University (AN2014–0243). After being informed in detail about the study aims and procedures, participants provided informed written consent prior to study participation.
: Not applicable.
: The authors report no conflict of interest.