1. Department of Cardiology Copenhagen University Hospital Herlev and Gentofte Hellerup Denmark
2. Department of Sleep Medicine Copenhagen University Hospital Rigshospitalet and Glostrup Copenhagen Denmark
3. Department of Epidemiology and Research The Danish Heart Foundation Copenhagen Denmark
4. The National Institute of Public Health University of Southern Denmark Copenhagen Denmark
5. Department of Cardiology Copenhagen University Hospital Bispebjerg and Frederiksberg Copenhagen Denmark