Received: 21 October 2020
Accepted: 18 January 2021
First Online: 1 February 2021
Ethics approval and consent to participate
: The Ethics Committee of the Medical University of Innsbruck approved the study (AN2015–0068 347/4.13393/5.20) and it was registered with Clinical Trials (ExternalRef removed).
: Not required.
: None of the authors has competing interests regarding this manuscript.