Article History
Received: 22 October 2020
Accepted: 24 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: Ethical clearance was not necessary and not sought from the Institutional Review Board of Heidelberg University as the experiment was done on cancer lines in vitro, not involving human beings.
: Not applicable.
: The authors declare that they have no competing interests.