Funding for this research was provided by:
Bayerische Forschungsstiftung (AZ 1070-13)
Article History
Received: 27 December 2019
Accepted: 21 May 2020
First Online: 17 June 2020
Ethics approval and consent to participate
: Studies on material of human origin were approved by the ethics committee of the Technical University of Munich, and informed consent was obtained from all donors.
: Not applicable.
: The authors declare that they have no competing interests.