1 Department of Cardiology, Pulmonology and Vascular Medicine, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany.
2 Department of Anaesthesiology, Perioperative Medicine and Intensive Care Medicine, Paracelsus Medical University, Salzburg, Austria.
3 Department of Clinical Medicine, Department of Anaesthesia and Intensive Care, Haukeland University Hospital, University of Bergen, Bergen, Norway.
4 Department of Intensive Care, Aarhus University Hospital, Aarhus, Denmark.
5 Department of Intensive Care Medicine, CIBER Enfermedades Respiratorias, Corporacion Sanitaria Universitaria Parc Tauli, Autonomous University of Barcelona, Sabadell, Spain.
6 Department of Acute Medicine, Geneva University Hospitals, Geneva, Switzerland.
7 Department of Intensive Care Medicine, Inselspital, Universitätsspital, University of Bern, Bern, Switzerland.
8 Department of Medical Intensive Care, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel.
9 Department of Anesthesia, Intensive Care and Pain Medicine, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel.
10 Department of Intensive Care and Perioperative Medicine, Jagiellonian University Medical College, Krakow, Poland.
11 Faculty of Medicine, University of Tripoli, Tripoli, Libya.
12 Division of Intensive Care and Emergency Medicine, Department of Internal Medicine, Medical University Innsbruck, Innsbruck, Austria.
13 Department of Intensive Care 1K12IC, Ghent University Hospital, Ghent, Belgium.
14 Institute of General Practice, Family Medicine and Preventive Medicine, Paracelsus Medical University, Salzburg, Austria.
15 Mater Misericordiae University Hospital, Dublin, Ireland.
16 Department of Anesthesia and Intensive Care, Ålesund Hospital, Ålesund, Norway.
17 Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway.
18 Hospital de São José, Centro Hospitalar Universitário de Lisboa Central, Faculdade de Ciências Médicas de Lisboa, Nova Médical School, Unidade de Cuidados Intensivos Neurocríticos e Trauma, Lisbon, Portugal.
19 UPMC Univ Paris, Institut Pierre Louis d'Epidémiologie et de Santé Publique, Equipe: épidémiologie hospitalière qualité et organisation des soins, Sorbonne Universités, Paris, France.
20 Assistance Publique - Hôpitaux de Paris, service de réanimation médicale, Hôpital Saint-Antoine, Paris, France.
21 Department of Intensive Care Medicine, University Medical Center, University Utrecht, Utrecht, The Netherlands.
22 General Intensive Care, St George´s University Hospitals NHS Foundation Trust, London, UK.
23 Department of Cardiology, Pulmonology and Vascular Medicine, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany. christian.jung@med.uni-duesseldorf.de.