Funding for this research was provided by:
Johann Wolfgang Goethe-Universität, Frankfurt am Main
Received: 27 October 2021
Accepted: 24 March 2022
First Online: 7 April 2022
: The study protocol was approved by the local Ethics Committee of the University Hospital Frankfurt (approved December 17, 2012, Ref. 318/17). Informed consent was waived for this study. All the ethical principles for medical investigation in human beings recorded in the Helsinki declaration of the World Medical Association were followed.
: not applicable.
: KZ: The Department of Anaesthesiology, Intensive Care Medicine & Pain Therapy of the University Hospital Frankfurt received support from B. Braun Melsungen, CSL Behring, Fresenius Kabi, and Vifor Pharma for the implementation of Frankfurt‘s Patient Blood Management program and KZ received honoraria for scientific lectures from CSL Behring, implatcast GmbH, med Update GmbH, Pharmacosmos and Vifor Pharma. PM: received honoraria for scientific lectures from Belgien Red Cross, Biotest, CSL Behring GmbH, Bundesamt für Bevölkerungsschutz und Katastrophenhilfe (BKK), Fresenius, Haemonetics, Landesärztekammer Sachsen, Landesärztekammer Hessen, Masimo, Radiometer, Schöchl medical Education, Thieme-Verlag, Trillium Diagnostik, Werfen GmbH, ViforPharma GmbH. FP received honoria from Pharmacosmos for scientific lectures. All other Authors declare no conflicts of interest.