Funding for this research was provided by:
Bayerisches Staatsministerium für Bildung und Kultus, Wissenschaft und Kunst (Geothermie-Allianz Bayern)
Article History
Received: 8 March 2020
Accepted: 4 August 2020
First Online: 20 August 2020
Compliance with ethical standards
:
: The authors declare that they have no competing interests.