1. Department of Health Science and Technology, Faculty of Medicine, Aalborg University , Selma Lagerloefs Vej 249, 9260 Gistrup, Aalborg , Denmark
2. DECIPHer, School of Social Sciences, Cardiff University , Maindy Road, Cardiff, CF24 4HQ , UK
3. Department of Health Science and Technology, Faculty of Medicine, Aalborg University , Selma Lagerloefs Vej 249, 9260 Gistrup, Aalborg , Denmark
4. Aalborg Centre of Health and Rehabilitation, Aalborg Municipality , Teglgårds Plads 1, 9000 Aalborg , Denmark
5. Department of Public Health, Faculty of Health Sciences, University of Southern Denmark , Degnevej 14, 6705 Esbjerg Ø , Denmark