1 Intensive Care Department, University Hospital Brussels (UZB), Jette, Belgium; Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), Brussels, Belgium. Electronic address: manu.malbrain@uzbrussel.be.
2 Intensive Care Department, University Hospital Brussels (UZB), Jette, Belgium. Electronic address: rita.jacobs@uzbrussel.be.
3 Department of Intensive Care, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark. Electronic address: anders.perner@regionh.dk.