1. Department of Clinical Science and Education, Södersjukhuset , Karolinska Institutet, and Unit of Anaesthesiology and Intensive Care , Södersjukhuset , SE-11883 Stockholm , Sweden
2. Department of Clinical Sciences , Karolinska Institutet, and Department of Rehabilitation Medicine, Danderyd Hospital , SE-18288 Stockholm , Sweden
3. Department of Clinical Science and Education , Södersjukhuset , Karolinska Institutet , SE-11883 Stockholm , Sweden
4. University of Texas Medical Branch at Galveston, UTMB Health , Department of Anaesthesiology , Galveston, TX , USA
5. Department of Community Medicine and Rehabilitation, Rehabilitation Medicine , Umeå University , SE-90185 Umeå , Sweden