Jenni Aittokallio1,2, Joonatan Palmu3,4, Teemu Niiranen3,4. 1. Department of Anesthesiology and Intensive Care, University of Turku, Finland. 2. Division of Perioperative Services, Intensive Care and Pain Medicine, Turku University Hospital, Finland. 3. Department of Medicine, Turku University Hospital and University of Turku, Finland. 4. Department of Public Health Solutions, Finnish Institute for Health and Welfare, Finland.