Funding for this research was provided by:
Deutsches Krebsforschungszentrum (DKFZ)
Received: 17 January 2020
Accepted: 27 April 2020
First Online: 19 May 2020
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This article is a review article and does not contain any studies with human participants or animals performed by any of the authors.