1. Department of Cardiothoracic Anaesthesia and Intensive Care Copenhagen University Hospital, Rigshospitalet Copenhagen Denmark
2. Department of Anaesthesiology and Intensive Care Aarhus University Hospital Aarhus Denmark
3. Department of Anaesthesiology and Intensive Care Herlev and Gentofte Hospital, University of Copenhagen Gentofte Denmark
4. Department of Intensive Care Copenhagen University Hospital, Rigshospitalet Copenhagen Denmark