1. Section of Social Medicine, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
2. The Copenhagen Stress Research Center, Copenhagen, Denmark
3. Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
4. Department of Public Health Sciences, Division of Social Medicine, Karolinska Institute, Stockholm, Sweden
5. Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
6. Danish Center for Sleep Medicine, Department of Clinical Neurophysiology, Center for Healthy Aging, Faculty of Health Sciences, University of Copenhagen, Glostrup Hospital, Copenhagen, Denmark