Funding for this research was provided by:
Bundesbehörden der Schweizerischen Eidgenossenschaft
Dr. Werner Jackstädt-Stiftung
Article History
Received: 31 May 2020
Accepted: 8 December 2020
First Online: 1 January 2021
Competing interests
: The authors declare that there are no competing interests associated with this study.