Received: 15 June 2020
Accepted: 17 November 2020
First Online: 25 November 2020
Ethics approval and consent to participate
: Our research project was conducted ethically in accordance with the World Medical Association Declaration of Helsinki. Permission for analysis of the clinical data was given by the regulatory heads of the respective hospitals, after the project was approved by the ethics committee of the Land Oberoesterreich (Ethics Committee Land Oberösterreich, 1001/2020, February 12th 2020) and the ethics committee of Vienna (Ethics Committee Vienna, EK 19–253-VK, January 2nd 2020). According to these votes an informed consent for participation was not necessary. This is based on the fact, that all data analyzed were obtained within the routine care procedures.
: Not applicable.
: The authors declare that they have no competing interests.