Funding for this research was provided by:
Verein zur Förderung der Lymphologie e.V., Hinterzarten, Germany.
Received: 28 June 2019
Accepted: 22 June 2020
First Online: 29 June 2020
Ethics approval and consent to participate
: All tissue donors gave their informed and written consent to the studies. The studies were approved by the ethics committee of the University Medical Hospital Göttingen, UMG (application no.: 18/1/18).
: Not applicable.
: The authors have no conflicts of interest relevant to this article to disclose.