1. Department of Medical Sciences; Cardiology and Uppsala Clinical Research Center, Uppsala University; Uppsala Sweden
2. UCR, Uppsala Clinical Research Center; Uppsala Sweden
3. Department of Cardiology; Lund University Hospital; Lund Sweden
4. Department of Cardiology; Karlstad Hospital; Karlstad Sweden
5. Department of Cardiology; Falun Lasarett; Falun Sweden
6. Department of Cardiology; Sahlgrenska University Hospital; Göteborg Sweden
7. Department of Cardiology; Södersjukhuset University Hospital; Stockholm Sweden