Ethics approval and consent to participate
The institutional Ethics Committee of the University of Regensburg (ref. 19–1522-101) approved the study protocol. The study was conducted in accordance with the declaration of Helsinki, the medical professional codex, the European General Data Protection Regulation (DS-GVO) and the Federal Data Protection Act (BDSG). Participants and their next of kin participated voluntarily and gave written informed consent. Participants were free to withdraw their participation at any time without negative consequences for their future medical care.