1 Division of Anesthesiology, Department of Anesthesiology, Intensive Care and Pain Medicine, Töölö Hospital, Helsinki, Finland.
2 University of Helsinki, Helsinki University Hospital, Helsinki, Finland, elina.brinck@hus.fi.
3 Division of Anesthesiology, Department of Anesthesiology, Intensive Care and Pain Medicine, Jorvi Hospital, Espoo, Finland, University of Helsinki, Helsinki University Hospital, Helsinki, Finland.