1 Department of Medical Sciences, Cardiology and Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden; Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands.
2 Department of Medical Sciences, Cardiology and Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden. Electronic address: [email protected].
3 Department of Cardiology, Sahlgrenska University Hospital, Göteborg, Sweden.
4 Department of Medical Sciences, Cardiology and Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden.
5 Department of Cardiology, Örebro University Hospital, Örebro, Sweden.
6 Department of Cardiology, Kalmar Hospital, Kalmar, Sweden.
7 Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands.