1. Department of Intensive Care Medicine Satakunta Central Hospital Pori Finland
2. Anaesthesiology and Intensive Care Department of Surgical Sciences Uppsala University Hospital Uppsala Sweden
3. Department of Anaesthesiology and Intensive Care Medicine Kuopio University Hospital Kuopio Finland
4. Faculty of Health Sciences School of Medicine Institute of Clinical Medicine University of Eastern Finland Kuopio Finland
5. Department of Intensive Care Medicine Central Hospital of Middle Ostrobothnia Kokkola Finland