1. South Karelia Central Hospital; Lappeenranta Finland
2. Faculty of Medicine and Life Sciences; University of Tampere; Tampere Finland
3. Department of Cardiology, Heart Center; Tampere University Hospital; Tampere Finland
4. Cardiology; Helsinki University Central Hospital; Helsinki Finland
5. Department of Internal Medicine; Hyvinkää Hospital; Hyvinkää Finland
6. Faculty of Social Sciences; University of Tampere; Tampere Finland
7. The Section of Cardiology, The Department of Medicine; Baylor College of Medicine; Houston Texas