1. Goethe University Frankfurt, University Hospital Frankfurt, Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, Frankfurt, Germany.
2. University Hospital Würzburg, Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, Würzburg, Germany.
3. Goethe University Frankfurt, University Hospital, Institute of Medical Informatics (IMI), Frankfurt am Main, Germany.
4. University Hospital, Department of Information and Communication Technology (DICT), Data Integration Center (DIC), Frankfurt am Main, Germany.