1. Department of Internal Medicine, Päijät-Häme Central Hospital, Lahti, Finland;
2. Department of Medicine, Division of Cardiology, University of California, San Francisco, CA, USA;
3. Department of Rehabilitation, Päijät-Häme Central Hospital, Lahti, Finland;
4. Faculty of Medicine and Life Sciences, Tampere University, Tampere, Finland;
5. Department of Public Health Solutions, National Institute of Health and Welfare, Helsinki, Finland;
6. Research Unit of Internal Medicine, Medical Research Center, Oulu University Hospital, University of Oulu, Oulu, Finland;
7. Department of Internal Medicine, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland;
8. Department of Internal Medicine, South Karelia Central Hospital, Lappeenranta, Finland