1 Division of Cardiology, Department of Medicine, Karolinska Institutet, Stockholm, Sweden.
2 Division of Cardiology, Cardiothoracovascular Department, Cattinara Hospital, Azienda Sanitaria Universitaria Giuliano Isontina and University of Trieste, Trieste, Italy.
3 Heart and Vascular and Neuro Theme, Karolinska University Hospital, Stockholm, Sweden.