Received: 2 June 2020
Accepted: 1 July 2020
First Online: 14 July 2020
Ethics approval and consent to participate
: Data collection was approved by the institutional ethics committee of the University of Freiburg (EK 168/20), and informed consent was obtained from all participants or legal representatives.
: Not applicable.
: Alexander Supady and Daniel Duerschmied received speakers’ honoraria from CytoSorbents, the manufacturer of the CytoSorb device. The Department of Cardiology and Angiology I received a research grant from CytoSorbents.