1. CINTESIS – Center for Health Technology and Services Research, Faculty of Medicine, University of Porto, Porto, Portugal
2. Department of Emergency and Intensive Care Medicine, Algarve University Hospital Centre, Faro, Portugal
3. Department of Biomedical Sciences and Medicine, University of Algarve, Faro, Portugal
4. Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Porto, Portugal
5. Intensive Care Unit, Hospital Santo Antonio, Porto University Hospital Center, Porto, Portugal
6. Department of Intensive Care, County Council of Östergötland, Linköping, Sweden
7. Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden