1 Department of Clinical Medicine, University of Bergen, Bergen, Norway. hans.flaatten@uib.no.
2 Department of Anaesthesia and Intensive Care, Haukeland University Hospital, Bergen, Norway. hans.flaatten@uib.no.
3 Department of Intensive Care Medicine, University Medical Center, University Utrecht, Utrecht, The Netherlands.
4 Division of Cardiology, Pulmonology and Vascular Medicine, University Hospital Düsseldorf, Heinrich-Heine- University, Düsseldorf, Germany.
5 Intensive Care, Hadassah University Hospital, Jerusalem, Israel.
6 Institut Pierre Louis d'Epidémiologie et de Santé Publique, Saint Antoine Hospital, AP-HP, Hôpital Saint-Antoine, Sorbonne Université, INSERM, Service de réanimation, 75012, Paris, France.