1. Department of Anesthesiology and Intensive Care Hospital of Southwest Jutland Esbjerg Esbjerg Denmark
2. Department of Internal Medicine Hospital of Southwest Jutland Esbjerg Esbjerg Denmark
3. Department of Neurophysiology Rigshospitalet Danish Center of Sleep Medicine (DCSM) Glostrup Denmark
4. Department of Anesthesiology and Intensive Care Odense University Hospital Odense Denmark