1. Department of Critical Care and Emergencies Rikshospitalet Medical Centre Oslo University Hospital Oslo Norway
2. Department of Anaesthesia Intensive Care Medicine Aalborg University Hospital Aalborg Denmark
3. Department of Clinical Medicine Aalborg University Aalborg Denmark
4. Department of Intensive Care 4131 Centre for Research in Intensive Care Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
5. Lovisenberg Diaconal University College Oslo Norway
6. Medical Library Aalborg University Hospital Aalborg Denmark
7. Medical Library Oslo University Hospital Oslo Norway