Funding for this research was provided by:
Universitätsklinikum des Saarlandes und Medizinische Fakultät der Universität des Saarlandes
Received: 3 July 2021
Accepted: 14 October 2021
First Online: 29 October 2021
: This study was approved by the local IRB (Ethikkommission der Aerztekammer des Saarlandes, Faktoreistrasse 4, 66111 Saarbruecken, Germany). The registration number of the study is 82/19. Due to the retrospective study design and the use of only anonymised data, the need for informed consent was waived by the IRB. The protocol was performed in accordance with the relevant local guidelines and regulations, including regulations on data protection.
: Not applicable.
: The authors declare that they have no competing interests.