1. Department of Public Health and Community Medicine/Primary Health Care (J.R., M.A.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Sweden.
2. Sahlgrenska University Hospital, Gothenburg, Sweden (J.R., M.S., M.L., A.R.).
3. Department of Molecular and Clinical Medicine (M.S., M.L., M.A., A.R.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Sweden.
4. Section of Occupational and Environmental Medicine, Department of Public Health and Community Medicine (L.S., K.T.), Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Sweden.
5. British Heart Foundation Cardiovascular Research Centre (J.M.), University of Glasgow.
6. Department of Cardiology, Western Infirmary, Glasgow, UK (J.M.).
7. Institute of Cardiovascular and Medical Sciences (N.S.), University of Glasgow.