Document is current

Article History

Received: 21 November 2021

Accepted: 25 March 2022

First Online: 4 April 2022

Declarations

:

: Authors declare that the investigations were carried out following the rules of the Declaration of Helsinki of 1975, revised in 2013. According to point 23 of this declaration, approval of an ethics committee was sought prior to the study. The approval was provided by the Ethics Committee of the Medical Faculty of Heinrich Heine University Dusseldorf, Germany (vote nr. 2020-906). Patient consent was waived due to the monocentric and retrospective nature of the study and due to the following considerations: many patients were already deceased at the time of data collection. Furthermore, all diagnostic procedures were performed as part of routine medical care. The monocentric study was conducted by the physicians at the University Hospital Dusseldorf, and no data were shared with or analysed by external parties. All data was anonymized prior to analysis. No data that could directly or indirectly identify the patients is included for publication. These aspects were specifically considered by the Ethics Committee of the Medical Faculty of Heinrich Heine University Dusseldorf, Germany, in vote nr. 2020-906.

: Not applicable.

: Authors declare that they have no competing interests.