1. Department of Anaesthesiology and Intensive Care; Linköping University; Linköping Sweden
2. Department of Medical and Health Sciences; Linköping University; Linköping Sweden
3. Division of Occupational and Environmental Medicine, Department of Clinical and Experimental Medicine and Forum Östergötland; Linköping University; Linköping Sweden
4. Department of Thoracic and Vascular Surgery; Linköping University; Linköping Sweden