1. Division of Anaesthesia and Intensive Care; Department of Clinical Science, Intervention and Technology (CLINTEC); Karolinska Institutet; Stockholm Sweden
2. Perioperative Medicine and Intensive Care; Karolinska University Hospital Huddinge; Stockholm Sweden
3. Östersund Hospital; Region Jämtland Härjedalen; Östersund Sweden
4. Medical Statistics Unit; Department of Learning, Information, Management and Ethics (LIME); Karolinska Institutet; Stockholm Sweden