Received: 13 November 2020
Accepted: 1 February 2021
First Online: 8 February 2021
Ethics approval and consent to participate
: The Ethics Committee of the Hamburg Chamber of Physicians was informed about the study (No.: WF-152/20). The requirement for informed patient consent was waived due to the use of anonymized data from routine clinical care only. The study was approved by the local clinical institutional review board and complied with the Declaration of Helsinki.
: Not applicable.
: KR, GS, DF, JM, MI, DW and DJ do not report any conflicts of interest related to this article. SK received research support by Ambu, E.T.View Ltd., Fisher & Paykel, Pfizer and Xenios, lecture honorarium from ArjoHuntleigh, Astellas, Astra, Basilea, Bard, Baxter, Biotest, CSL Behring, Cytosorbents, Fresenius, Gilead, MSD, Orion, Pfizer, Philips, Sedana, Sorin, Xenios and Zoll, and consultant honorarium from AMOMED, Astellas, Baxter, Bayer, Fresenius, Gilead, MSD, Pfizer and Xenios. No other potential conflict of interest relevant to this article was reported.