1. Department of Public Health and Clinical Medicine, Heart Centre, Umeå University, Umeå, Sweden
2. Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
3. Department of Physiology, University of Auckland, Auckland, New Zealand
4. Department of Radiation Sciences, Biomedical Engineering, Umeå University, Sweden
5. Centre for Demographic and Ageing Research, Umeå University, Umeå, Sweden
6. Ageing and Living Conditions Programme, Umeå University, Umeå, Sweden