1 Department of Anaesthesiology and Intensive Care Medicine, Zealand University Hospital, Køge, Denmark.
2 Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark.
3 Clinical Research, Investigation, and Systems Modelling of Acute Illness (CRISMA) Centre, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
4 Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark. anders.perner@regionh.dk.
5 Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark. anders.perner@regionh.dk.