Funding for this research was provided by:
Received: 17 August 2021
Accepted: 16 December 2021
First Online: 11 January 2022
: The local institutional review boards approved the retrospective anonymous data analysis waiving the need for an informed written consent.
: All authors critically reviewed and approved the final submitted version of the manuscript. All authors have agreed both to be personally accountable for the author’s own contributions and to ensure that questions related to the accuracy or integrity of any part of the work, even ones in which the author was not personally involved, are appropriately investigated, resolved, and the resolution documented in the literature.
: G. Elke has received lecture fees and travel support from Fresenius Kabi, Baxter and consulting fees and travel support from Cardinal Health, Fresenius Kabi and Nutricia. W. Hartl has received travel support from Fresenius Kabi. H. Küchenhoff has received travel support and consulting fees from Fresenius Kabi. The rest of the authors have no competing interest to declare.